# Mandatory Experiment: Electric conduction

Size: px
Start display at page:

## Transcription

1 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, a battery, a bulb holder, a bulb and two connecting wires and set up the circuit shown at right. Does the bulb light? 2. Suppose you would place the materials you re given, one by one, in the circuit as shown. In the table below, write whether you think the bulb would light or not. Do not carry out the experiment yet. Material What do you think? Bulb will light (Yes/No) 3. Insert each of the materials individually into the circuit as shown in the diagram above. Take note of your observations by filling in the table below. Results Material Bulb lights Bulb doesn t light

2 2 Electricity Experiments 4. Compare your results in Question 3 with your ideas from Question 2. Which of your ideas were correct, and which were incorrect? You have seen that different materials have different effects on bulb brightness. This leads us to the two new terms based on our observations. The objects that let the bulb glow are called conductors. The objects that make the bulb go out are called insulators. 5. Insert some of your own objects into the circuit to test if they are conductors or insulators. Tick the appropriate box in the table below. Object Conductor Insulator 6. Do the conductors that you have seen so far have anything in common? In the last few steps we separated a number of materials into groups of conductors and insulators. We now look at some other conductors and compare their effects on bulb brightness.

3 Electricity Experiments 3 7. Set up a circuit which allows you to investigate the following hypothesis: Copper wire is a better conductor than nichrome wire. Plan your investigation below. Make sure you include a diagram of the set-up you think you will use. (Hint: If an insulator makes a light bulb go out and a good conductor makes it light, how could you identify a not-so-good conductor?). Discuss if you have designed a fair test. If not, what would you need to make the test a fair one? 8. Check your plans with your teacher. Do not change your answers to part 7; instead, describe how you carried out your investigation, and the results you got, in the space below. Draw a new diagram of the set-up if you need to. 9. We can rank materials by how good an insulator they are. This property is called the material s resistance. Which has a higher resistance: a piece of copper wire or an elastic band? _ Which has a higher resistance: a piece of copper wire or a piece of nichrome wire of the same length? _

4 4 Electricity Experiments Homework Questions 1. Will the bulb light in the circuits shown below? Explain your answer briefly. 2. The box shown at right contains a material which is connected to the two wires. Describe an experiment which allows you to tell whether the material is a conductor or an insulator. Draw a diagram, and state how you would decide. 3. In the set-up to the right, the bulb does not light. Is there an insulator or conductor between the two wires? Name the insulator or conductor. 4. In your own words, describe why you think electrical wires are insulated.

5 Electricity Experiments 5 Experiment: Ammeters and voltmeters In this experiment, you may assume that: Ø Inside a battery, the direction of current is from the negative terminal to the positive terminal ( from minus to plus ) Ø Outside a battery, the direction of current is from the positive terminal to the negative terminal ( from plus to minus ) Ø The brighter a bulb, the greater the current through it. Section 1: Ammeters To measure current we use ammeters. 1. Draw a circuit diagram for the circuit shown. Set up the circuit. Try and remember how bright the bulb is. 2. Now add an ammeter to the circuit as shown. Does the ammeter change the current in the circuit? Explain how you can tell. Is the ammeter a good conductor? Explain. Does the ammeter have a low or a high resistance? Explain. _

6 6 Electricity Experiments 3. Suppose you switch the ammeter and the bulb. Do you think the ammeter reading would change? Explain. Check your prediction. Does the bulb use up current? _ 4. Replace the bulb with a resistor. Write down the ammeter reading. _ Is the current through a battery constant, or can it change? How can you tell? Section 2: Voltmeters 1. Set up the circuit at right. Is the voltmeter connected in series or in parallel? Does the bulb light? Does the voltmeter change the current in the circuit? Explain how you can tell. Does the voltmeter have a high or a low resistance? Explain. _

7 Electricity Experiments 7 2. Draw a circuit diagram for the circuit below. How is the voltmeter connected now? _ Set up the circuit. Does the bulb light? _ Write down the voltmeter reading. _ Does the voltmeter now have a noticeable effect on the current through the bulb? Explain. _ In which set-up does the voltmeter appear to be more useful? 3. Replace the bulb with a resistor. Write down the voltmeter reading. _ Does the voltage across a battery seem to be constant, or can it change? _

8 8 Electricity Experiments Homework Question 1. Draw two experimental set-ups that correspond to the two circuit diagrams below. The two resistors are the same. A student says that the ammeter readings are different, because in one of the circuits the resistor will have used up some of the current before it gets to the ammeter. Do you agree? Explain your answer.

9 Electricity Experiments 9 Mandatory Experiment: Ohm s Law 1. Set up the circuit shown. Measure the current and the voltage, and write your measurements in the first row of table 1. Some of the circuit elements get all the current. Name them. Most, but not all of the current goes through the resistor. Explain why this is so. _ 2. Add a second battery in series with the first as shown. Write down the new voltmeter and ammeter readings in table 1. When a second battery is added in series, what happens to the voltage across the resistor? When a second battery is added in series, what happens to the current through the resistor? Table 1: Voltage and current for a resistor. Number of batteries Voltage (V) Current (ma) Current (A) 1 2 3

10 10 Electricity Experiments 3. Predict what would happen to the voltage and the current through the resistor when you add a third battery. Check your predictions, and write your results in table 1. _ 4. If you have not done so already, convert your ma readings to A. Plot a graph that shows how the current through the resistor changes when the voltage across the resistor is changed. Plot voltage on the vertical axis, and current (in A) on the horizontal axis. Do your data points appear to lie on a straight line? _ Does the line appear to go through, or nearly go through, the origin? _ What do these answers suggest about how voltage and current are related? _

11 Electricity Experiments Find the value of the slope. What units do you use? _ If you want to increase the current through the resistor by 1 A, by how much would you need to change the voltage? Explain. 6. The ratio of voltage and current is called the resistance of the resistor. Do you think the resistance of a resistor is constant? Explain how you can tell from the graph. The relationship between voltage and current that you have found in this experiment is called Ohm s Law. Homework Questions 1. A student carries out an experiment like yours for two different resistors, 1 and 2. She plots her results in a single graph. Which resistor has the greatest resistance, 1 or 2? Explain. 2. The graph on the left below shows how the current through a resistor changes when the voltage across it is changed. The graph at right below shows the same for a light bulb.

12 12 Electricity Experiments Use the graphs to calculate the resistance of the resistor when the current through it is 300 ma, and when it is 600 ma. Do the same for the bulb. Write your results in the table below. resistor resistor bulb bulb I (A) V (V) R (W) In your own words, explain how you can tell, just by looking at the shape of the graph, how the resistance of an object changes when you increase the current through that object. Does Ohm s Law apply to a light bulb? Explain how you can tell.

### Electric 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

### Which 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

### Series and Parallel Circuits Virtual Lab

Series and Parallel Circuits Virtual Lab Learning Goals: Students will be able to Discuss basic electricity relationships Discuss basic electricity relationships in series and parallel circuits Build series,

### 34.5 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

### ACTIVITY 1: Electric Circuit Interactions

CYCLE 5 Developing Ideas ACTIVITY 1: Electric Circuit Interactions Purpose Many practical devices work because of electricity. In this first activity of the Cycle you will first focus your attention on

### INVESTIGATION 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

### Science 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

### Engaging Inquiry-Based Activities Grades 3-6

ELECTRICITY AND CIRCUITS Engaging Inquiry-Based Activities Grades 3-6 Janette Smith 2016 Janette Smith 2016 1 What s Inside Activity 1: Light it Up!: Students investigate different ways to light a light

### PHYSICS 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

### EXPERIMENT - 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

### Section 6 HOW ARE VALUES OF CIRCUIT VARIABLES MEASURED?

Section 6 HOW RE VUES OF CIRCUIT VRIBES MESURED? INTRODUCTION People who use electric circuits for practical purposes often need to measure quantitative values of electric pressure difference and flow

### Current, 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

### 1103 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

### Batteries 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,

### Lab 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

### Lab 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

### POWER and ELECTRIC CIRCUITS

POWER and ELECTRIC CIRCUITS Name For many of us, our most familiar experience with the word POWER (units of measure: WATTS) is when we think about electricity. Most of us know that when we change a light

### PROPERTIES OF ELECTRIC CIRCUITS

Name: PROPERTIES OF ELECTRIC CIRCUITS Date: Go to www.linville.ca and click on the page Computer Simulations or go to http://phet.colorado.edu/simulations open the Circuit Construction: DC and then click

### SC10F Circuits Lab Name:

SC10F Circuits Lab Name: Purpose: In this lab you will be making, both, series and parallel circuits. You will then be using a millimeter to take readings at various points in these circuits. Using these

### Laboratory 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

### 45 Current Electricity. February 09, Current Electricity. What we will learn, Arc Attack. Electric Man. 1

Current Electricity What we will learn, Arc Attack Electric Man www.mrcjcs.com 1 Conductors and Insulators An electric current is a flow of electric charge. Set up a simple electrical circuit and insert

### 7.9.2 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

### Essential 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

### Name 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

### Lab 08: Circuits. This lab is due at the end of the laboratory period

Name: Partner(s): 1114 section: Desk # Date: Purpose Lab 08: Circuits This lab is due at the end of the laboratory period The purpose of this lab is to gain experience with setting up electric circuits

### Unit 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.

### 7. 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

### PHYSICS 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

### 11.1 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

### LABORATORY 2 MEASUREMENTS IN RESISTIVE NETWORKS AND CIRCUIT LAWS

LABORATORY 2 MEASUREMENTS IN RESISTIVE NETWORKS AND CIRCUIT LAWS The objective of this experiment is to provide working knowledge of the ammeter, voltmeter, and ohmmeter as well as their limitations in

### A device that measures the current in a circuit. It is always connected in SERIES to the device through which it is measuring current.

Goals of this second circuit lab packet: 1 to learn to use voltmeters an ammeters, the basic devices for analyzing a circuit. 2 to learn to use two devices which make circuit building far more simple:

### ELECTRICITY & 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

### Circuits. This lab is due at the end of the laboratory period

Name: Partner(s): 1114 section: Desk # Date: Purpose Circuits This lab is due at the end of the laboratory period The purpose of this lab is to gain experience with setting up electric circuits and using

### Phys 202A. Lab 7 Batteries, Bulbs and Current

Phys 202A Lab 7 Batteries, Bulbs and Current Name Objectives: To understand how a voltage (potential difference) results in a current flow through a conductor. To learn to design and wire simple circuits

Name: Date: Student Exploration: Advanced Circuits [Note to teachers and students: This Gizmo was designed as a follow-up to the Circuits Gizmo. We recommend doing that activity before trying this one.]

### Circuit 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

### Unit 9. (Filled In) Draw schematic circuit diagrams for resistors in series and in parallel

Name: Date: Period: Unit 9 Series & Parallel Circuits (Filled In) Essential Questions: Does adding resistors to a circuit always reduce current? Does adding more light bulbs to a circuit always make them

### Experiment 3: Ohm s Law; Electric Power. Don t take circuits apart until the instructor says you don't need to double-check anything.

Experiment 3: Ohm s Law; Electric Power. How to use the digital meters: You have already used these for DC volts; turn the dial to "DCA" instead to get DC amps. If the meter has more than two connectors,

### Searching for Patterns in Series and Parallel Circuits

Searching for Patterns in Series and Parallel Circuits Use the Circuit Construction Kit on phet.colorado.edu (DC Circuits only) to build the following circuits. fter building each circuit, use the ammeter

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

### Electricity 2 Questions NAT 5

Electricity 2 Questions NAT 5 1) a) A 25W lamp is designed to be used with the mains voltage. Calculate the resistance of the lamp. b) Four of the lamps are connected in parallel. Calculate the total resistance

### PHY152H1S Practical 3: Introduction to Circuits

PHY152H1S Practical 3: Introduction to Circuits Don t forget: List the NAMES of all participants on the first page of each day s write-up. Note if any participants arrived late or left early. Put the DATE

### Name Date Period. MATERIALS: Light bulb Battery Wires (2) Light socket Switch Penny

Name Date Period Lab: Electricity and Circuits CHAPTER 34: CURRENT ELECTRICITY BACKGROUND: Just as water is the flow of H 2 O molecules, electric current is the flow of charged particles. In circuits of

### Circuits. Now put the round bulb in a socket and set up the following circuit. The bulb should light up.

Name: Partner(s): 1118 section: Desk # Date: Purpose Circuits The purpose of this lab is to gain experience with setting up electric circuits and using meters to measure voltages and currents, and to introduce

### Series 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

### 2. 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

### Physics - 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

### 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

### The graphs show the voltage across two different types of cell as they transfer the last bit of their stored energy through the torch bulb.

Q1. A small torch uses a single cell to make the bulb light up. (a) The graphs show the voltage across two different types of cell as they transfer the last bit of their stored energy through the torch

### LESSON PLAN: Circuits and the Flow of Electricity

LESSON PLAN: Michigan Curriculum Framework Middle School Benchmark SCI.IV.1.MS.5 Construct simple circuits and explain how they work in terms of the flow of current. Benchmark SCI.IV.1.MS.6 Investigate

### Thinking distance in metres. Draw a ring around the correct answer to complete each sentence. One of the values of stopping distance is incorrect.

Q1.An investigation was carried out to show how thinking distance, braking distance and stopping distance are affected by the speed of a car. The results are shown in the table. Speed in metres per second

### Sharjah Indian School Sharjah Boys Wing

Read the instructions given below carefully before writing the fair record book. The following details are to be written on the LEFT HAND SIDE of the book. CIRCUIT DIAGRAM CALCULATIONS The remaining details

### Name: 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

### Cabrillo 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)

### reflect energy: the ability to do work

reflect Have you ever thought about how much we depend on electricity? Electricity is a form of energy that runs computers, appliances, and radios. Electricity lights our homes, schools, and office buildings.

### 1ACE Exercise 1. Name Date Class

1ACE Exercise 1 Investigation 1 1. A group of students conducts the bridge-thickness experiment with construction paper. Their results are shown in this table. Bridge-Thickness Experiment Thickness (layers)

### CHAPTER 6.3: CURRENT ELECTRICITY

CHAPTER 6.3: CURRENT ELECTRICITY These components are used in electric circuits. TASK: Draw how you could make this lamp light. Electricity will only flow through a complete circuit. The battery, wires

### ELECTRICITY: 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

### Based on results from TIMSS Key. bulb. bulb. switch. wir. battery. wir. switch. Lesson plan on investigative science. wire.

bulb Based on results from TIMSS 2015 Key battery Key ba bu tte switch sw h itc bulb e wir battery switch wire bat sw Lesson plan on investigative science Electricity wir Electricity Pupils performed less

### 1. The back window of this car contains a heating element. The heating element is part of an electrical circuit connected to the battery of the car.

1. The back window of this car contains a heating element. The heating element is part of an electrical circuit connected to the battery of the car. The diagrams below show two ways of connecting the circuit

### Genecon Teaching notes

How to use Genecon V3 / DUE...2 Precautions...3 Teaching ideas and activities. 1. Using a Genecon as an alternative power supply...4 Using a data logger and Voltage sensor...5 2. Demonstrating the efficiency

### ENGR 40M Problem Set 1

Name: Lab section/ta: ENGR 40M Problem Set 1 Due 7pm April 13, 2018 Homework should be submitted on Gradescope, at http://www.gradescope.com/. The entry code to enroll in the course is available at https://web.stanford.edu/class/engr40m/restricted/gradescope.html.

### EPSE Project 1: Sample Diagnostic Questions - Set 3

EPSE Project 1: Sample Diagnostic Questions - Set 3 Circuit behaviour These questions probe pupils understanding of the behaviour of simple electric circuits. Most are about series circuits, and check

### Electric 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

### 7.9.1 Circuits. 123 minutes. 170 marks. Page 1 of 56

7.9.1 Circuits 123 minutes 170 marks Page 1 of 56 ## The diagram shows a motor, connected to a 240 V supply, driving a water pump. The ammeter reads 5.0 A. (a) How much charge flows through the motor in

### Data Sheet for Series and Parallel Circuits Name: Partner s Name: Date: Period/Block:

Data Sheet for Series and Parallel Circuits Name: Partner s Name: Date: _ Period/Block: _ Build the two circuits below using two AAA or AA cells. Measure and record Voltage (Volts), Current (A), and Resistance

### AP Physics B Ch 18 and 19 Ohm's Law and Circuits

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

### Exam-style questions: electricity

Exam-style questions: electricity Q. The diagram shows an electrical circuit. (a) Complete the two labels on the diagram. P and Q are meters. What is meter P measuring?... () What is meter Q measuring?...

### High 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

### APPARATUS 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,

### Basic voltmeter use. Resources and methods for learning about these subjects (list a few here, in preparation for your research):

Basic voltmeter use This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,

### Series circuits. The ammeter

Series circuits D o you remember how the parts of the torch on pages 272 3 were connected together? The circuit contained several components, connected one after the other. Conductors, like the metal strip

### HOW 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

### Figure 1: (a) cables with alligator clips and (b) cables with banana plugs.

Ohm s Law Safety and Equipment Computer with PASCO Capstone, PASCO 850 Universal Interface Double banana/alligator Cable, 2 Alligator Wires PASCO Voltage Sensor Cable Multimeter with probes. Rheostat Ruler

### Science Test Revision

John Buchan Middle School Science Test Revision 4F Circuits and Conductors 39 min 38 marks Name John Buchan Middle School 1 Level 3 1. Conducting electricity (a) Year 6 are testing objects to see if they

### Electricity and Magnetism Module 2 Student Guide

Concepts of this Module Introducing current and voltage Simple circuits Circuit diagrams Background Electricity and Magnetism Module 2 Student Guide When water flows through a garden hose, we can characterize

### Chapter 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,

### Chapter 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

### Physics 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

### LETTER TO PARENTS SCIENCE NEWS. Dear Parents,

LETTER TO PARENTS Cut here and paste onto school letterhead before making copies. Dear Parents, SCIENCE NEWS Our class is beginning a new science unit using the FOSS Magnetism and Electricity Module. We

### PhysicsAndMathsTutor.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

### Lab 2 Electrical Measurements and Ohm s Law

Lab 2 Electrical Measurements and Ohm s Law Safety and Equipment No special safety precautions are necessary for this lab. Computer with PASCO Capstone, PASCO 850 Universal Interface Double banana/alligator

### 8.2 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

### ELECTRICITY: ELECTROMAGNETISM QUESTIONS

ELECTRICITY: ELECTROMAGNETISM QUESTIONS The flying fox (2017;3) Sam has a flying fox (zip line) that he wants to use in the dark. Sam connects a 12.0 V battery to a spotlight, using two 1.60-metre-long

### Electricity and Magnetism. Introduction/Review

Electricity and Magnetism Introduction/Review Overall Expectations By the end of this unit, students will: 1. Analyse the social, economic, and environmental impact of electrical energy production and

### Circuits-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,

### Period 11 Activity Sheet Solutions: Electric Current

Period 11 Activity Sheet Solutions: Electric Current Activity 11.1: How Can Electric Charge Do Work? Your instructor will demonstrate a Wimshurst machine, which separates electric charge. a) Describe what

### Fig There is a current in each wire in a downward direction (into the page).

1 (a) Two straight, vertical wires X and Y pass through holes in a horizontal card. Fig. 8.1 shows the card viewed from above. card wire in hole X Y wire in hole Fig. 8.1 There is a current in each wire

### Goals. 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

### Objectives. Materials TI-73 CBL 2

. Objectives To understand the relationship between dry cell size and voltage Activity 4 Materials TI-73 Unit-to-unit cable Voltage from Dry Cells CBL 2 Voltage sensor New AAA, AA, C, and D dry cells Battery

### 2: 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

### V=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

### 12 Electricity and Circuits

12 Electricity and Circuits We use electricity for many purposes to make our tasks easier. For example, we use electricity to operate pumps that lift water from wells or from ground level to the roof top

Using your Digital Multimeter The multimeter is a precision instrument and must be used correctly. The rotary switch should not be turned unnecessarily. To measure Volts, Milliamps or resistance, the black

### Module 9. DC Machines. Version 2 EE IIT, Kharagpur

Module 9 DC Machines Lesson 38 D.C Generators Contents 38 D.C Generators (Lesson-38) 4 38.1 Goals of the lesson.. 4 38.2 Generator types & characteristics.... 4 38.2.1 Characteristics of a separately excited

### Electricity 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

### Electric Circuits Lab

Electric Circuits Lab Purpose: To construct series and parallel circuits To compare the current, voltage, and resistance in series and parallel circuits To draw schematic (circuit) diagrams of various