AP Physics B Ch 18 and 19 Ohm's Law and Circuits
|
|
- Darren Barker
- 5 years ago
- Views:
Transcription
1 Name: Period: Date: AP Physics B Ch 18 and 19 Ohm's Law and Circuits MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A device that produces electricity by transforming chemical energy into electrical energy is called a A) battery. B) generator. C) transformer. D) none of the given answers 1) 2) A car battery A) has an emf of 6 V consisting of three 2-V cells connected in series. B) has an emf of 6 V consisting of one 6-V cell. C) has an emf of 6 V consisting of three 2-V cells connected in parallel. D) has an emf of 12 V consisting of six 2-V cells connected in series. 2) 3) The total amount of charge that passes through a wire's full cross section at any point per unit of time is referred to as A) current. B) voltage. C) electric potential. D) wattage. 3) 4) The direction of convention current is taken to be the direction that A) positive charges would flow. B) negative charges would flow. 4) 5) A coulomb per second is the same as A) an ampere. B) a watt. C) a volt-second. D) a volt per second. 5) 6) Car batteries are rated in "amp-hours." This is a measure of their A) power. B) emf. C) current. D) charge. 6) 7) The resistance of a wire is defined as A) (current)*(voltage). B) (voltage)/(current). C) (current)/(voltage). D) none of the given answers 7) 8) What is 1! equivalent to? A) 1 J/s B) 1 V/A C) 1 W/A D) 1 V A 8) 9) The resistance of a wire is A) proportional to its length and inversely proportional to its cross-sectional area. B) inversely proportional to its length and proportional to its cross-sectional area. C) proportional to its length and its cross-sectional area. D) inversely proportional to its length and its cross-sectional area. 9) 1
2 10) The resistivity of a wire depends on A) its cross-sectional area. B) its length. C) the material out of which it is composed. 10) 11) Which conducting material has the lowest resistivity value? A) copper B) aluminum C) silver D) gold 11) 12) Consider two copper wires. One has twice the length of the other. How do the resistivities of these two wires compare? A) The longer wire has twice the resistivity of the shorter wire. B) The longer wire has four times the resistivity of the shorter wire. C) Both wires have the same resistivity. D) none of the given answers 12) 13) Consider two copper wires. One has twice the length of the other. How do the resistances of these two wires compare? A) The longer wire has twice the resistance of the shorter wire. B) Both wires have the same resistance. C) The longer wire has half the resistance of the shorter wire. D) none of the given answers 13) 14) Consider two copper wires. One has twice the cross-sectional area of the other. How do the resistances of these two wires compare? A) The thicker wire has half the resistance of the shorter wire. B) The thicker wire has twice the resistance of the shorter wire. C) Both wires have the same resistance. D) none of the given answers 14) 15) Consider two copper wires. One has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wires compare? A) The longer wire has twice the resistance of the shorter wire. B) Both wires have the same resistance. C) The longer wire has four times the resistance of the shorter wire. D) none of the given answers 15) 16) The length of a wire is doubled and the radius is doubled. By what factor does the resistance change? A) quarter as large B) half as large C) twice as large D) four times as large 16) 17) How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the same material? A) 400% B) 100% C) 75% D) 300% 17) 2
3 18) The resistivity of most common metals A) varies randomly as the temperature increases. B) increases as the temperature increases. C) decreases as the temperature increases. D) remains constant over wide temperature ranges. 18) 19) Negative temperature coefficients of resistivity A) exist in semiconductors. B) do not exist. C) exist in conductors. D) exist in superconductors. 19) 20) What is 1 W equivalent to? A) 1 V A B) 1 V/A C) 1 V/! D) 1! A 20) 21) A kilowatt-hour is equivalent to A) 3,600,000 J. B) 3,600,000 J/s. C) 1000 W. D) 3600 s. 21) 22) If the resistance in a constant voltage circuit is doubled, the power dissipated by that circuit will A) increase by a factor of two. B) decrease to one-half its original value. C) decrease to one-fourth its original value. D) increase by a factor of four. 22) 23) If the voltage across a circuit of constant resistance is doubled, the power dissipated by that circuit will A) quadruple. B) decrease to one half. C) decrease to one fourth. D) double. 23) 24) If the resistance in a circuit with constant current flowing is doubled, the power dissipated by that circuit will A) quadruple. B) decrease to one half. C) double. D) decrease to one fourth. 24) 25) If the current flowing through a circuit of constant resistance is doubled, the power dissipated by that circuit will A) decrease to one half. B) quadruple. C) decrease to one fourth. D) double. 25) 26) During a power demand, the voltage output is reduced by 5.0%. By what percentage is the power on a resistor affected? A) 90% less B) 5.0% less C) 2.5% less D) 10% less 26) 27) A current that is sinusoidal with respect to time is referred to as A) a direct current. B) an alternating current. 27) 28) Consider two copper wires each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is A) 2:1. B) 1:4. C) 1:2. D) 4:1. 28) 3
4 29) Materials in which the resistivity becomes essentially zero at very low temperatures are referred to as A) semiconductors. B) conductors. C) insulators. D) superconductors. 29) 30) The potential difference between the terminals of a battery, when no current flows to an external circuit, is referred to as the A) emf. B) terminal voltage. 30) 31) The potential difference between the terminals of a battery, when current flows to an external circuit, is referred to as the A) emf. B) terminal voltage. 31) 32) When two or more resistors are connected in series to a battery A) the same current flows through each resistor. B) the total voltage across the combination is the algebraic sum of the voltages across the individual resistors. C) the equivalent resistance of the combination is equal to the sum of the resistances of each resistor. 32) 33) When resistors are connected in series, A) the potential difference across each is the same. B) the same power is dissipated in each one. C) the current flowing in each is the same. D) More than one of the given answers is true. 33) 34) Three identical resistors are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistors? A) zero B) 12 A C) 36 A D) 4 A 34) 35) Three identical resistors are connected in series to a 12-V battery. What is the voltage across any one of the resistors? A) 4 V B) zero C) 36 V D) 12 V 35) 36) You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct? A) The 50-W bulb glows more brightly than the 100-W bulb. B) Both bulbs glow at the same reduced brightness. C) The 100-W bulb glows brighter than the 50-W bulb. D) Both bulbs glow at the same increased brightness. 36) 37) As more resistors are added in series to a constant voltage source, the power supplied by the source A) increases. B) does not change. C) decreases. D) increases for a time and then starts to decrease. 37) 4
5 38) When two or more resistors are connected in parallel to a battery, A) the voltage across each resistor is the same. B) the equivalent resistance of the combination is less than the resistance of any one of the resistors. C) the total current flowing from the battery equals the sum of the currents flowing through each resistor. 38) 39) When resistors are connected in parallel, we can be certain that A) their equivalent resistance is greater than the resistance of any one of the individual resistances. B) the power dissipated in each is the same. C) the same current flows in each one. D) the potential difference across each is the same. 39) 40) Three identical resistors are connected in parallel to a 12-V battery. What is the voltage of any one of the resistors? A) 36 V B) zero C) 12 V D) 4 V 40) 41) Three identical resistors are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistors? A) 36 A B) 4 A C) 12 A D) zero 41) 42) The lamps in a string of Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.) A) The other lamps get brighter equally. B) The other lamps get dimmer, but some get dimmer than others. C) The other lamps get dimmer equally. D) The brightness of the lamps will not change appreciably. E) The other lamps get brighter, but some get brighter than others. 42) 43) As more resistors are added in parallel to a constant voltage source, the power supplied by the source A) increases. B) increases for a time and then starts to decrease. C) decreases. D) does not change. 43) 44) Consider three identical resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate? A) 3P B) 2P C) 2P/3 D) 3P/2 44) ESSAY. Write your answer in the space provided or on a separate sheet of paper. 45) State Kirchhoff's junction rule. 46) State Kirchhoff's loop rule. 5
6 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 47) Kirchhoff's loop rule is an example of A) conservation of momentum. B) conservation of charge. C) conservation of energy. D) none of the given answers 47) 48) Kirchhoff's junction rule is an example of A) conservation of charge. B) conservation of momentum. C) conservation of energy. D) none of the given answers 48) 49) Which of the equations here is valid for the circuit shown? 49) FIGURE 19-1 A) -2 - I1-2I2 = 0 B) 6 - I1-2I2 = 0 C) 2-2I1-2I2-4I3 = 0 D) 2 - I1-2I2 = 0 E) 4 - I1 + 4I3 = 0 50) If you connect two identical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will provide A) zero volts. B) twice the voltage, and the same current will flow through each. C) the same voltage, and different currents will flow through each. D) twice the voltage, and different currents will flow through each. 50) 51) If you connect two identical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provide A) zero volts. B) twice the voltage, and the same current will flow through each. C) the same voltage, and different currents will flow through each. D) twice the voltage, and different currents will flow through each. 51) 6
7 52) If you connect two identical storage batteries together in parallel, and place them in a circuit, the combination will provide A) half the voltage and half the total charge that one battery would. B) the same voltage and twice the total charge that one battery would. C) twice the voltage and twice the total charge that one battery would. D) twice the voltage and the same total charge that one battery would. 52) 53) When two or more capacitors are connected in series to a battery, A) each capacitor carries the same amount of charge. B) the total voltage across the combination is the algebraic sum of the voltages across the individual capacitors. C) the equivalent capacitance of the combination is less than the capacitance of any of the capacitors. 53) 54) As more and more capacitors are connected in series, the equivalent capacitance of the combination increases. A) always true B) never true C) Sometimes true; it depends on the voltage of the battery to which the combination is connected. D) Sometimes true; it goes up only if the next capacitor is larger than the average of the existing combination. 54) 55) Three identical capacitors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry? A) Q/3 B) 3Q C) Q/9 D) Q 55) 56) When two or more capacitors are connected in parallel to a battery, A) the voltage across each capacitor is the same. B) the equivalent capacitance of the combination is less than the capacitance of any one of the capacitors. C) each capacitor carries the same amount of charge. 56) 57) As more and more capacitors are connected in parallel, the equivalent capacitance of the combination increases. A) never true B) always true C) Sometimes true; it depends on the voltage of the battery to which the combination is connected. D) Sometimes true; it goes up only if the next capacitor is larger than the average of the existing combination. 57) 58) Three identical capacitors are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry? A) Q B) Q/3 C) Q/9 D) 3Q 58) 7
8 59) What is the unit for the quantity RC? A) meters B) ohms C) seconds D) volt-ampere/ohm 59) 60) A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitor is A) less than the battery's terminal voltage, but greater than zero. B) zero. C) greater than the battery's terminal voltage. D) equal to the battery's terminal voltage. 60) 61) A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor is A) equal to the battery's terminal voltage. B) greater than the battery's terminal voltage. C) less than the battery's terminal voltage, but greater than zero. D) zero. 61) 62) A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistor is A) greater than the battery's terminal voltage. B) less than the battery's terminal voltage, but greater than zero. C) zero. D) equal to the battery's terminal voltage. 62) 63) An ideal ammeter should A) introduce a very small series resistance into the circuit whose current is to be measured. B) consist of a galvanometer in series with a large resistor. C) introduce a very large series resistance into the circuit whose current is to be measured. D) have a high coil resistance. 63) 64) A galvanometer can be converted to an ammeter by the addition of a A) large resistance in parallel. B) large resistance in series. C) small resistance in parallel. D) small resistance in series. 64) 65) A current reading is obtained by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a result, A) the current flowing in the circuit increases. B) the voltage drop across the resistor increases. C) the current flowing in the circuit does not change. D) the current flowing in the circuit decreases. 65) 66) Decreasing the resistance of an ammeter's shunt resistance A) allows it to measure a larger current at full scale deflection. B) converts it to a voltmeter. C) enables more current to pass directly through the galvanometer. D) allows it to measure a smaller current at full scale deflection. 66) 8
9 67) In order to construct a voltmeter from a galvanometer, one normally would A) use a very small shunt resistor. B) use a very small series resistor. C) use a very large series resistor. D) use a very large shunt resistor. 67) 68) Increasing the resistance of a voltmeter's series resistance A) enables more current to pass through the meter movement at full-scale deflection. B) allows it to measure a larger voltage at full-scale deflection. C) converts it to an ammeter. D) allows it to measure a smaller voltage at full-scale deflection. 68) 69) A voltage reading is obtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this action? A) The current increases. B) The current increases if the meter's internal resistance is less than the original resistance in the circuit and decreases if its internal resistance is greater than the circuit's original resistance. C) The current decreases. D) The current does not change. 69) 70) An unknown resistor is wired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained A) is the true resistance. B) is greater than the true resistance. C) is less than the true resistance. D) could be any of the given answers. It depends on other factors. 70) 71) An unknown resistor is wired in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained A) is the true resistance. B) is less than the true resistance. C) is greater than the true resistance. D) could be any of the given answers. It depends on other factors. 71) 9
CHAPTER 19 DC Circuits Units
CHAPTER 19 DC Circuits Units EMF and Terminal Voltage Resistors in Series and in Parallel Kirchhoff s Rules EMFs in Series and in Parallel; Charging a Battery Circuits Containing Capacitors in Series and
More informationCircuits-Circuit Analysis
Base your answers to questions 1 through 3 on the information and diagram below. 4. A 9-volt battery is connected to a 4-ohm resistor and a 5-ohm resistor as shown in the diagram below. A 3.0-ohm resistor,
More informationName: Base your answer to the question on the information below and on your knowledge of physics.
Name: Figure 1 Base your answer to the question on the information below and on your knowledge of physics. A student constructed a series circuit consisting of a 12.0-volt battery, a 10.0-ohm lamp, and
More informationCOLLEGE PHYSICS Chapter 21 CIRCUITS, BIOELECTRICITY, AND DC INSTRUMENTS
COLLEGE PHYSICS Chapter 21 CIRCUITS, BIOELECTRICITY, AND DC INSTRUMENTS Resistances in Series, Parallel, and Series Parallel Combinations Resistors in series all have the same current. Resistances in Series,
More informationChapter 26 DC Circuits. Copyright 2009 Pearson Education, Inc.
Chapter 26 DC Circuits 26-1 EMF and Terminal Voltage Electric circuit needs battery or generator to produce current these are called sources of emf. Battery is a nearly constant voltage source, but does
More informationChapter 26 DC Circuits
Chapter 26 DC Circuits Electric circuit needs battery or generator to produce current these are called sources of emf. Battery is a nearly constant voltage source, but does have a small internal resistance,
More information7. How long must a 100-watt light bulb be used in order to dissipate 1,000 joules of electrical energy? 1) 10 s 3) 1,000 s 2) 100 s 4) 100,000 s
1. Which quantity must be the same for each component in any series circuit? 1) power 3) current 2) resistance 4) voltage 2. A student needs a 4-ohm resistor to complete a circuit. Only a large quantity
More informationChapter 28. Direct Current Circuits
Chapter 28 Direct Current Circuits Direct Current When the current in a circuit has a constant magnitude and direction, the current is called direct current Because the potential difference between the
More information10/23/2016. Circuit Diagrams. Circuit Diagrams. Circuit Elements
Circuit Diagrams The top figure shows a literal picture of a resistor and a capacitor connected by wires to a battery. The bottom figure is a circuit diagram of the same circuit. A circuit diagram is a
More informationDirect-Current Circuits
Chapter 26 Direct-Current Circuits PowerPoint Lectures for University Physics, 14th Edition Hugh D. Young and Roger A. Freedman Lectures by Jason Harlow Learning Goals for Chapter 26 Looking forward at
More informationElectric Circuits Exam
Electric Circuits Exam 1. The diagram below represents a lamp, a 10-volt battery, and a length of nichrome wire connected in series. 4. Which circuit has the smallest equivalent resistance? A) B) As the
More informationChapter Assessment Use with Chapter 22.
Date Period 22 Use with Chapter 22. Current Electricity Understanding Concepts Part A Use each of the following terms once to complete the statements below. ampere electric current potential difference
More information2. Four 20-Ω resistors are connected in parallel and the combination is connected to a 20- V emf device. The current in any one of the resistors is:
University Physics (Prof. David Flory) Chapt_27 Sunday, February 03, 2008 Page 1 Name: Date: 1. By using only two resistors, R1 and R2, a student is able to obtain resistances of 3 Ω, 4 Ω, 12 Ω, and 16
More informationChapter 19: DC Circuits
Chapter 19: DC Circuits EMF and Terminal Voltage Resistors in Series and in Parallel Kirchhoff s Rules EMFs in Series and in Parallel; Charging a Battery Capacitors in Series and in Parallel RC Circuits
More informationWhich of the following statements is/are correct about the circuit above?
Name: ( ) Class: Date: Electricity Exercises 1. Which of the following statements is/are correct about the circuit above? (1) Electrons flow from right to left through the bulb A. (2) Charges will be used
More informationLecture 5, 7/19/2017. Review: Kirchhoff s Rules Capacitors in series and in parallel. Charging/Discharging capacitors. Magnetism
Lecture 5, 7/19/2017 Review: Kirchhoff s Rules Capacitors in series and in parallel. Charging/Discharging capacitors. Magnetism Find the current drawn by this circuit. Kirchhoff s Rules Kirchhoff s rules:
More informationINDIAN SCHOOL MUSCAT
INDIAN SCHOOL MUSCAT Department of Physics Class:XII Physics Worksheet-3 (2018-2019) Chapter 3: Current Electricity Section A Conceptual and Application type Questions 1 Two wires of equal length, one
More informationELECTRICITY & MAGNETISM - EXAMINATION QUESTIONS (4)
ELECTRICITY & MAGNETISM - EXAMINATION QUESTIONS (4) 1. Which two electrical quantities are measured in volts? A current and e.m.f. B current and resistance C e.m.f. and potential difference D potential
More informationScience Olympiad Shock Value ~ Basic Circuits and Schematics
Science Olympiad Shock Value ~ Basic Circuits and Schematics Use a single D battery, a single bare wire and a light bulb. Find four different ways to light the light bulb using only a battery, one wire
More informationChapter 27. Circuits
Chapter 27 Circuits 27.2: Pumping Charges: In order to produce a steady flow of charge through a resistor, one needs a charge pump, a device that by doing work on the charge carriers maintains a potential
More informationSeries and Parallel Circuits
Series and Parallel Circuits 1 of 23 Boardworks Ltd 2016 Series and Parallel Circuits 2 of 23 Boardworks Ltd 2016 What are series and parallel circuits? 3 of 23 Boardworks Ltd 2016 Circuit components can
More informationSOURCES OF EMF AND KIRCHHOFF S LAWS
SOURCES OF EMF AND KIRCHHOFF S LAWS VERY SHORT ANSWER QUESTIONS 1. What is the SI unit of (i) emf (ii) terminal potential difference? 2. When an ammeter is put in series in a circuit, does it read slightly
More informationChapter 19. DC Circuits
Ch-19-1 Chapter 19 Questions DC Circuits 1. Explain why birds can sit on power lines safely, even though the wires have no insulation around them, whereas leaning a metal ladder up against a power line
More information11.1 CURRENT ELECTRICITY. Electrochemical Cells (the energy source) pg Wet Cell. Dry Cell. Positive. Terminal. Negative.
Date: SNC1D: Electricity 11.1 CURRENT ELECTRICITY Define: CIRCUIT: path that electrons follow. CURRENT ELECTRICITY: continuous flow of electrons in a circuit LOAD: device that converts electrical energy
More informationWrite the term that correctly completes the statement. Use each term once. ampere. electric current. resistor battery.
Date Period Name CHAPTER 22 Study Guide Current Electricity Vocabulary Review Write the term that correctly completes the statement. Use each term once. ampere electric current resistor battery kilowatt-hour
More informationElectric current, resistance and voltage in simple circuits
Lab 6: Electric current, resistance and voltage in simple circuits Name: Group Members: Date: T s Name: pparatus: ulb board with batteries, connecting wires, two identical bulbs and a different bulb, a
More informationConceptual Physics Electricity and Circuits Practice Exam 2011
Name: Class: Date: Conceptual Physics Electricity and Circuits Practice Exam 2011 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. In order to form an electric
More informationLecture PowerPoints. Chapter 19 Physics: Principles with Applications, 6 th edition Giancoli
Lecture PowerPoints Chapter 19 Physics: Principles with Applications, 6 th edition Giancoli 2005 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for
More informationCurrent, resistance and potential difference
Multiple choice questions 1. Three conductors join as shown in the diagram. The direction of the current in each conductor is shown by the arrow. Y Z X The current in the conductor Z is 10 A. The current
More informationJSUNIL TUTORIAL PUNJABI COLONY GALI 01
10 th Electricity Numerical 1. The current passing through a room heater has been halved. What will happen to the heat produced by it? 2. An electric iron of resistance 20 ohm draws a current of 5 amperes.
More informationWhat does the measure? I
TOP 17 urrent Electricity 1 Which of the following is a correct unit for electrical energy? 5 The diagrams show the symbols and ranges of five meters. ampere Which meter should be used to measure a current
More informationCircuit Analysis Questions A level standard
1. (a) set of decorative lights consists of a string of lamps. Each lamp is rated at 5.0 V, 0.40 W and is connected in series to a 230 V supply. Calculate the number of lamps in the set, so that each lamp
More informationEssential Electricity Homework Exercise 1
Homework Exercise 1 1. For each of the following electrical symbols, copy the symbol into you jotter and label it using the words below. Word bank resistor, voltmeter, battery, ammeter, bulb V A 2. State
More informationINTERACTIVE SCIENCE 2A
INTERACTIVE SCIENCE 2A Workbook Solutions (Enrichment Edition) Chapter 8 MAKING USE OF ELECTRICITY Part A Sectional Exercise 8.1 & 8.2 Concept checking p.35 1. False 2. True 3. False 4. True 5. True Questions
More informationPhysics - Chapters Task List
Name Hour Physics - Chapters 34-35 Task List Task In Class? (Yes/No) Date Due Grade Lab 33.1 - Wet Cell Battery Yes */15 * Vodcast #1 Electric Circuits & Ohm s Law /21 Worksheet Concept Review #1-12, Ch
More informationElectricity Unit Review
Science 9 Electricity Unit Review Name: General Definitions: Neutral Object Charge Separation Electrical Discharge Electric Current Amperes (amps) Voltage (volts) Voltmeter Ammeters Galvanometer Multimeter
More information7.9.2 Potential Difference
7.9.2 Potential Difference 62 minutes 69 marks Page 1 of 20 Q1. A set of Christmas tree lights is made from twenty identical lamps connected in series. (a) Each lamp is designed to take a current of 0.25
More informationSeries and Parallel Networks
Series and Parallel Networks Department of Physics & Astronomy Texas Christian University, Fort Worth, TX January 17, 2014 1 Introduction In this experiment you will examine the brightness of light bulbs
More informationQ2. The diagram shows a network of four 2 Ω resistors. The effective resistance, in Ω, between X and Y is A 0.5 B 1.2 C 1.7. D 2.
Q1. Three identical cells, each of internal resistance R, are connected in series with an external resistor of resistance R. The current in the external resistor is I. If one of the cells is reversed in
More information16.3 Ohm s Law / Energy and Power / Electric Meters
16.3 Ohm s Law / Energy and Power / Electric Meters Voltage Within a battery, a chemical reaction occurs that transfers electrons from one terminal to another terminal. This potential difference across
More informationB How much voltage does a standard automobile battery usually supply?
Chapter 2 B-003-16-01 How much voltage does a standard automobile battery usually supply? 1. About 240 volts 2. About 120 volts 3. About 12 volts 4. About 9 volts B-003-16-02 Which component has a positive
More informationThe rod and the cloth both become charged as electrons move between them.
1 polythene rod is rubbed with a cloth. polythene rod cloth The rod and the cloth both become charged as electrons move between them. The rod becomes negatively charged. Which diagram shows how the rod
More informationLab 4. DC Circuits II
Physics 2020, Spring 2005 Lab 4 page 1 of 7 Lab 4. DC Circuits II INTRODUCTION: This week we will continue with DC circuits, but now with an emphasis on current rather than voltage. Of course, in order
More informationElectrical Circuits W.S.
Electrical Circuits W.S. 1. In the circuit shown at the right, a voltage of 6 V pushes charge through a single resistor of 2 W. According to Ohm's law, the current in the resistor, and therefore in the
More informationName Period. (c) Now replace the round bulb(s) with long bulb(s). How does the brightness change?
Name Period P Phys 1 Discovery Lesson Electric Circuits 2.1 Experiment: Charge Flow Strength & Resistors circuit is an unbroken loop of conductors. Charge (q) can flow continuously in a circuit. If an
More informationClass X Chapter 09 Electrical Power and Household circuits Physics
EXERCISE- 9 (A) Question 1: Write an expression for the electrical energy spent in flow of current through an electrical appliance in terms of current, resistance and time. Solution 1: Electrical energy,
More informationChapter 21 Electric Current and Direct- Current Circuits
Chapter 21 Electric Current and Direct- Current Circuits Menu Electric Current Resistance and Ohm s Law Energy and Power in Electric Circuits Resistors in Series and Parallel HW # 5 Pg. 754 759: # 7, 8,
More informationLaboratory 5: Electric Circuits Prelab
Phys 132L Fall 2018 Laboratory 5: Electric Circuits Prelab 1 Current and moving charges Atypical currentinanelectronic devicemightbe5.0 10 3 A.Determinethenumber of electrons that pass through the device
More informationCurrent Electricity. 3 rd Years
Current Electricity 3 rd Years Comparing: Flow of electricity to flow of water. Electric Current An electric current is a flow of electric charge. An electric current is caused by the flow of electrons
More informationAP Physics B: Ch 20 Magnetism and Ch 21 EM Induction
Name: Period: Date: AP Physics B: Ch 20 Magnetism and Ch 21 EM Induction MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If the north poles of
More informationV=I R P=V I P=I 2 R. E=P t V 2 R
Circuit Concepts Learners should be able to: (a) draw, communicate and analyse circuits using standard circuit symbols using standard convention (b) apply current and voltage rules in series and parallel
More informationPAPER ASSIGNMENT #1: ELECTRIC CIRCUITS Due at the beginning of class Saturday, February 9, 2008
PHYS 591 - Foundations of Science II By Richard Matthews PAPER ASSIGNMENT #1: ELECTRIC CIRCUITS Due at the beginning of class Saturday, February 9, 2008 Part I; Outline of the important elements of the
More informationCurrent Score: 0/20. Due: Mon Feb :15 PM EST. Question Points. 0/40/100/40/10/1 Total 0/20. Description
1 of 5 2/4/2010 3:35 PM Current Score: 0/20 Due: Mon Feb 15 2010 10:15 PM EST Question Points 1 2 3 4 5 0/40/100/40/10/1 Total 0/20 Description This assignment is worth 20 points. Each part is worth 1
More information7J Electrical circuits Multiple-choice main test
For each question, circle the correct answer. Question 1 A switch turns off a torch by... A) breaking the circuit B) making the circuit C) shorting the circuit D) turning a series circuit into a parallel
More informationCurrent Electricity. GRADE 10 PHYSICAL SCIENCE Robyn Basson CAPS
Current Electricity GRADE 10 PHYSICAL SCIENCE Robyn Basson CAPS What is current electricity? The flow of moving charge, usually carried by moving electrons in a wire. Circuits A path in which charges continually
More informationPhys102 Lecture 12 Electric Currents and Resistance
Phys102 Lecture 12 Electric Currents and Resistance Key Points Ohm s Law Resistivity Electric Power Alternating Current References SFU Ed: 25-1,2,3,4,5,6,7. 6 th Ed: 18-1,2,3,4,5,6,7 25-1 The Electric
More information4.2 Electrical Quantities
For more awesome GSE and level resources, visit us at www.savemyexams.co.uk/ 4.2 Electrical Quantities Question Paper Level IGSE Subject Physics (625) Exam oard Topic Sub Topic ooklet ambridge International
More informationL E A R N I N G O U T C O M E S
L E A R N I N G O U T C O M E S What is charge? How does a charge form? Electricity What is an electric current? Y E A R 1 0 C H A P T E R 1 2 What are conductors, insulators and semiconductors? How does
More informationBatteries n Bulbs: Voltage, Current and Resistance (8/6/15) (approx. 2h)
Batteries n Bulbs: Voltage, Current and Resistance (8/6/15) (approx. 2h) Introduction A simple electric circuit can be made from a voltage source (batteries), wires through which current flows and a resistance,
More informationElectromagnetic Induction Chapter Questions. 1. What is the Electromagnetic Force (EMF)? What are the units of EMF?
Electromagnetic Induction Chapter Questions 1. What is the Electromagnetic Force (EMF)? What are the units of EMF? 2. The discovery of electric currents generating an magnetic field led physicists to look
More information15 Electrical Circuits Name Worksheet A: SERIES CIRCUIT PROBLEMS
Worksheet A: SERIES CIRCUIT PROBLEMS be careful to use proper significant figures on all answers 1. What would be the required voltage of an energy source in a circuit with a current of 10.0 A and a resistance
More informationUnit 8 ~ Learning Guide Name:
Unit 8 ~ Learning Guide Name: Instructions: Using a pencil, complete the following notes as you work through the related lessons. Show ALL work as is explained in the lessons. You are required to have
More informationINVESTIGATION ONE: WHAT DOES A VOLTMETER DO? How Are Values of Circuit Variables Measured?
How Are Values of Circuit Variables Measured? INTRODUCTION People who use electric circuits for practical purposes often need to measure quantitative values of electric pressure difference and flow rate
More informationAPPARATUS AND MATERIAL REQUIRED Resistor, ammeter, (0-1.5A) voltmeter (0-5V ), battery, one way key, rheostat, sand paper, connecting wires.
ACTIVITIES ACTIVITY 1 AIM To assemble the components of a given electrical circuit. APPARATUS AND MATERIAL REQUIRED Resistor, ammeter, (0-1.5A) voltmeter (0-5V ), battery, one way key, rheostat, sand paper,
More information8.2 Electric Circuits and Electrical Power
8.2 Electric Circuits and Electrical Power Every electrical device uses current to carry energy and voltage to push the current. How are electrical devices designed? What types of parts are used in an
More information34.5 Electric Current: Ohm s Law OHM, OHM ON THE RANGE. Purpose. Required Equipment and Supplies. Discussion. Procedure
Name Period Date CONCEPTUAL PHYSICS Experiment 34.5 Electric : Ohm s Law OHM, OHM ON THE RANGE Thanx to Dean Baird Purpose In this experiment, you will arrange a simple circuit involving a power source
More informationMandatory Experiment: Electric conduction
Name: Class: Mandatory Experiment: Electric conduction In this experiment, you will investigate how different materials affect the brightness of a bulb in a simple electric circuit. 1. Take a battery holder,
More informationPHYSICS MCQ (TERM-1) BOARD PAPERS
GRADE: 10 PHYSICS MCQ (TERM-1) BOARD PAPERS 1 The number of division in ammeter of range 2A is 10 and voltmeter of range 5 V is 20. When the switch of the circuit given below is closed, ammeter reading
More informationUpdate. This week A. B. Kaye, Ph.D. Associate Professor of Physics. Michael Faraday
10/26/17 Update Last week Completed Sources of Magnetic Fields (Chapter 30) This week A. B. Kaye, Ph.D. Associate Professor of Physics (Chapter 31) Next week 30 October 3 November 2017 Chapter 32 Induction
More informationHigher - Electricity Powerpoint Answers
Higher - Electricity Powerpoint Answers 1. Electrical current is defined as the number of coulombs of charge that pass a point per second. 2. Potential difference is defined as the energy given to each
More informationLab 4. DC Circuits II
Physics 2020, Spring 2005 Lab 4 page 1 of 7 Lab 4. DC Circuits II INTRODUCTION: This week we will continue with DC circuits, but now with an emphasis on current rather than voltage. Of course, in order
More informationELECTRICITY: INDUCTORS QUESTIONS
ELECTRICITY: INDUCTORS QUESTIONS No Brain Too Small PHYSICS QUESTION TWO (2017;2) In a car engine, an induction coil is used to produce a very high voltage spark. An induction coil acts in a similar way
More informationEKT112 Principles of Measurement and Instrumentation. Power Measurement
EKT112 Principles of Measurement and Instrumentation Power Measurement 1 Outline Power? Power in DC and AC Circuits Power Measurements Power Instrumentation (Wattmeter) 2 Concept of Electric POWER Power
More informationActivity 3: Electricity
Name Section Activity 3: Electricity 3.1 Electric Charge, Voltage and Energy 1) Electric charge Your instructor will demonstrate a Wimshurst machine, which separates electric charge. a) Describe what happens
More informationElectronics Technology and Robotics I Week 2 Basic Electrical Meters and Ohm s Law
Electronics Technology and Robotics I Week 2 Basic Electrical Meters and Ohm s Law Administration: o Prayer o Bible Verse o Turn in quiz Meters: o Terms and Definitions: Analog vs. Digital Displays: Analog
More informationCabrillo College Physics 10L. LAB 7 Circuits. Read Hewitt Chapter 23
Cabrillo College Physics 10L Name LAB 7 Circuits Read Hewitt Chapter 23 What to learn and explore Every electrical circuit must have at least one source (which supplies electrical energy to the circuit)
More informationElectromagnetic Induction
Electromagnetic Induction Question Paper Level ubject Exam oard Unit Topic ooklet O Level Physics ambridge International Examinations Electricity and Magnetism Electromagnetic Induction Question Paper
More informationRL Circuits Challenge Problems
RL Circuits Challenge Problems Problem : RL Circuits Consider the circuit at left, consisting of a battery (emf ε), an inductor L, resistor R and switch S. For times t< the switch is open and there is
More informationPhysicsAndMathsTutor.com 1
Q1. A battery of emf 9.0 V and internal resistance, r, is connected in the circuit shown in the figure below. (a) The current in the battery is 1.0 A. (i) Calculate the pd between points A and B in the
More informationLevel 3 Physics: Demonstrate understanding of electrical systems Batteries and Kirchoff s Laws - Answers
Level 3 Physics: Demonstrate understanding of electrical systems Batteries and Kirchoff s Laws - Answers In 03, AS 956 replaced AS 9053. The Mess that is NCEA Assessment Schedules. In AS 9053 there was
More informationOhm s Law. 1-Introduction: General Physics Laboratory (PHY119) Basic Electrical Concepts:
Ohm s Law General Physics Laboratory (PHY119) 1-Introduction: Basic Electrical Concepts: 1- Current (I): Is the flow of electrons through a conductor or semiconductor. For current to flow, it requires
More informationUnit P.2, P2.3. Currents in electric circuits E ½. F Fuel gauge indicator. Fuel tank. Ammeter. Float. Battery. Sliding contact. Pivot 12V.
Currents in electric circuits 1. The diagram shows the fuel gauge assembly in a car. The sliding contact touches a coil of wire and moves over it. The sliding contact and the coil form a variable resistor.
More informationELECTRICAL MAINTENANCE
ELECTRICAL MAINTENANCE II PRACTICAL JOURNAL DATA 1 EXPERIMENT NO. 1 AIM: TO FIND VOLTAGE RATIO OF A GIVEN TRANSFORMER. CIRCUIT DIAGRAM: OBSERVATION TABLE: Sr.No. 1 2 3 4 Primary Voltage (V 1 ) Secondary
More informationElectricity. Chapter 20
Electricity Chapter 20 Types of electric charge Protons + charge Electrons - charge SI unit of electric charge is the coulomb (C) Interactions between charges Like charges repel Opposite charges attract
More informationELECTRICAL FUNDAMENTALS
ELECTRICAL FUNDAMENTALS PLUG OCTOBER 27, 2016 ARINDERPAL MATHARU IDEAWORKS MOHAWK COLLEGE Introduction Goal: To provide you with the Electrical Fundamentals Early 1800s Timeline 21 ST Century Current Current
More informationPHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits
PHYSCS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits This experiment is designed to investigate the relationship between current and potential in simple series
More informationUsing Electricity. Summary Notes. 1. From the Wall Socket Household appliances. Earth wire and safety.
Using Electricity Summary Notes Section Content 1. From the Wall Socket Household appliances. Earth wire and safety. 2. Alternating and Direct Battery and transformer. Current Circuit diagrams. Current
More informationHigh Demand Questions QUESTIONSHEET 1 (a) Teresa set up the circuit shown in the diagram. The ammeter reading was 0.4 A.
High Demand Questions QUESTIONSHEET 1 (a) Teresa set up the circuit shown in the diagram. The ammeter reading was 0.4 A. A 4 Ω (i) What is the value of the current through the 4Ω resistor? (ii) What is
More informationELECTRICAL. CDTA Technical Training Center
ELECTRICAL ATOMIC STRUCTURE Protons positive charge Electron negative charge Neutron - neutral Electricity is the movement of electrons from atom to atom ELECTRON FLOW CONDUCTOR - Materials which have
More informationCHAPTER 2 ELECTRIC CIRCUIT
CHAPTE 2 ELECTIC CICUIT 1 Electric charges Two kinds of charges Who carry those charges? Unit of charge 2 Flow of charge and electric current The true picture of a circuit Page 1 The conventional picture
More informationGoals. Introduction (4.1) R = V I
Lab 4. Ohm s Law Goals To understand Ohm s law, used to describe behavior of electrical conduction in many materials and circuits. To calculate electrical power dissipated as heat. To understand and use
More informationHOW IS ELECTRICITY PRODUCED?
ELECTRICITY HOW IS ELECTRICITY PRODUCED? All electricity is produced from other sources of energy. Hydroelectricity is produced from the stored energy of water held back by a dam. As the water runs downhill
More informationAcademic Year
EXCELLENCE INTERNATIONAL SCHOOL First Term, Work sheet (1) Grade (9) Academic Year 2014-2015 Subject: quantities Topics:- Static electricity - Eelectrical NAME: DATE: MULTIPLE CHOICE QUESTIONS: 1 - A circuit
More informationUnit 3 Lesson 2 Electric Current. Copyright Houghton Mifflin Harcourt Publishing Company
Current Events What is an electric current? Electrical energy is the energy of electric charges. In most devices that use electrical energy, the electric charges flow through wires. The rate of flow of
More information1103 Period 16: Electrical Resistance and Joule Heating
Name Section 1103 Period 16: Electrical Resistance and Joule Heating Activity 16.1: What Does the Electrical Resistance of a Wire Depend Upon? 1) Measuring resistance a) Resistor length, L Use a multimeter
More informationCircuit Basics and Components
Circuit Basics Electric circuits are arrangements of conductors and components that permit electrical current to flow. A circuit can be as simple as a battery and lamp or as sophisticated as a computer.
More informationPhysics Experiment 9 Ohm s Law
Fig. 9-1 Simple Series Circuit Equipment: Universal Circuit Board Power Supply 2 DMM's (Digital Multi-Meters) with Leads 150- Resistor 330- Resistor 560- Resistor Unknown Resistor Miniature Light Bulb
More information2: The resistivity of copper is Ω.m. Determine the resistance of a copper wire that is 1.3 m long and has a diameter of 2.1 mm.
Chapter 20 Discussion January-03-15 8:58 PM Electric Circuits Discussion Questions 1: A current of 12 A flows for 2.5 minutes to charge a battery. How much charge is transferred to the battery in this
More informationEXPERIMENT - 1 OHM S LAW
NOTE: While you copy the practical record see that you are following the note. Write Aim, theory, materials required, procedure, results, discussion and precautions on the right side of your record. While
More informationELECTRICAL MEASURING INSTRUMENT CHAPTER 15 ELECTRICAL MEASURING INSTRUMENTS THE MOVING COIL GALVANOMETER The moving coil galvanometer is a basic electrical instrument. It is used for the detection or measurement
More information