Resistance. Resistance is a property of matter that slows movement.

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Resistance. Resistance is a property of matter that slows movement."

Transcription

1 Resistance

2 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a pipe is also an example of resistance. The water is slowed down by the sides of the pipe, causing it to move more slowly through the pipe Resistance between the tire and the road gives grip. What happens when there is no resistance?

3 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a pipe is also an example of resistance. The water is slowed down by the sides of the pipe, causing it to move more slowly through the pipe Resistance between the tire and the road gives grip. Resistance can be very important! What happens when there is no resistance?

4 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a hose pipe is also an example of resistance. The water is slowed down by the sides of the hose, pipe, causing it to move more slowly through the pipe hose.

5 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a hose is also an example of resistance. The water is slowed down by the sides of the hose, causing it to move more slowly through the hose. Electrons flowing through a wire or a load (like a light bulb) also experience resistance. This resistance reduces the electrical energy of the circuit, converting some of the energy into some other form. The wire and lamp resist the movement of electrons.

6 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a hose is also an example of resistance. The water is slowed down by the sides of the hose, causing it to move more slowly through the hose. Electrons flowing through a wire or a load (like a light bulb) also experience resistance. This resistance reduces the electrical energy of the circuit, converting some of the energy into some other form. Electron movement Resistance

7 Resistance Resistance is a property of matter that slows movement. The friction of a car s tires against the road is an example of resistance. The flow of water through a hose is also an example of resistance. The water is slowed down by the sides of the hose, causing it to move more slowly through the hose. Electrons flowing through a wire or a load (like a light bulb) also experience resistance. This resistance reduces the electrical energy of the circuit, converting some of the energy into another form. Light Heat Sound

8 Resistance The unit used to measure resistance is the ohm (!). The mathematical relationship between voltage, current and resistance is called Ohm s Law. Named in honor of Georg Simon Ohm ( )

9 Electrical Resistance Electrical resistance is the ability of a material to oppose the flow of electric current. Symbol is R The greater the resistance the lower the current, and the warmer the material comes when current flow through it. Internal resistance depends on many factors. (we will look at 4)

10 1. Type of Material Some materials conduct electricity well and electrons can move within the material freely. For example copper is an excellent conductor and has low electrical resistance.

11 2. Cross-Sectional Area the diameter of the cross section gives you a sense of how thick the wire is. Thicker wires have less internal resistance than thinner ones. Electrons flowing through thicker wire have more room to move freely.

12 3. Length As you increase the length of the wire, its internal resistance increases. This happens because electrons have to travel through more material.

13 4. Temperature When a wire gets warmer, the atoms that make up the wire gain energy and vibrate faster. Increased vibrations cause more collisions, so resistance increases with temperature.

14 Resistors in Circuits A resistor ~ is a device in an electrical circuit that reduces the flow of electric current. Examples: a lamp that has multiple brightness settings or a dimmer switch

15 Homework Page 566 #3, 5-7

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

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

More information

11.1 CURRENT ELECTRICITY. Electrochemical Cells (the energy source) pg Wet Cell. Dry Cell. Positive. Terminal. Negative.

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

More information

Electrical Circuits Discussion Questions:

Electrical Circuits Discussion Questions: Electrical Circuits Discussion Questions: 1) What is electricity? 2) How does an electrical circuit work? 3) What types of materials conduct electrical energy? 4) How is electrical energy measured? 5)

More information

Series and Parallel Circuits Virtual Lab

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,

More information

Electrical Circuits W.S.

Electrical 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 information

PAPER ASSIGNMENT #1: ELECTRIC CIRCUITS Due at the beginning of class Saturday, February 9, 2008

PAPER 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 information

Parts of an atom. Protons (P + ) Electrons (e - ) Neutrons. Have a positive electric charge. Have a negative electric charge

Parts of an atom. Protons (P + ) Electrons (e - ) Neutrons. Have a positive electric charge. Have a negative electric charge Electricity Parts of an atom Protons (P + ) Have a positive electric charge Electrons (e - ) Have a negative electric charge Neutrons Are neutral Have no charge Electric Charge In most atoms, the charges

More information

Batteries n Bulbs: Voltage, Current and Resistance (8/6/15) (approx. 2h)

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,

More information

Science Olympiad Shock Value ~ Basic Circuits and Schematics

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

More information

Alessandro Volta. Frog's leg Batteries. L 26 Electricity and Magnetism [3] Batteries. Inside a Duracell 1.5 Volt battery

Alessandro Volta. Frog's leg Batteries. L 26 Electricity and Magnetism [3] Batteries. Inside a Duracell 1.5 Volt battery L 26 Electricity and Magnetism [3] Electric circuits what conducts electricity what doesn t t conduct electricity Current voltage and resistance Ohm s s Law Heat in a resistor power loss Making simple

More information

8.2 Electric Circuits and Electrical Power

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

More information

FUN! Protected Under 18 U.S.C. 707

FUN! Protected Under 18 U.S.C. 707 FUN! Protected Under 18 U.S.C. 707 DC I Lesson Objectives: 1. What is Electricity? 2. Discover the Electron 3. Learn about Conductors and Insulators 4. Learn about Voltage and Current 5. Learn the difference

More information

If the magnetic field is created by an electromagnet, what happens if we keep it stationary but vary its strength by changing the current through it?

If the magnetic field is created by an electromagnet, what happens if we keep it stationary but vary its strength by changing the current through it? If a moving electron in a magnetic field experiences a force pushing on it at right angles to its motion, what happens when we take a copper wire (with lots of easily dislodged electrons in it) and move

More information

Electricity and Magnetism (Demo Version) The pictures show different arrangements of a battery, a light bulb, and a piece of copper wire.

Electricity and Magnetism (Demo Version) The pictures show different arrangements of a battery, a light bulb, and a piece of copper wire. Read each question carefully. 1) The pictures show different arrangements of a battery, a light bulb, and a piece of copper wire. Which arrangement will light the bulb? 1 2) In which of the following circuits

More information

Things to do at home

Things to do at home presents Things to do at home Things to do at home Now that you have visited the Gadget Factory and learned the basics of circuitry to make your very own flashing badge, we ve got some other great activities

More information

Electricity Unit Review

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

More information

PHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits

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

More information

Electrical Connections

Electrical Connections Electrical Connections TABLE OF CONTENTS ABOUT DELTA SCIENCE MODULES Program Introduction................... iii Teacher s Guide..................... iv Delta Science Readers............... vi Equipment

More information

Circuits-Circuit Analysis

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,

More information

Modern Auto Tech Study Guide Chapter 8 Pages Electricity & Electronics 37 Points. Automotive Service

Modern Auto Tech Study Guide Chapter 8 Pages Electricity & Electronics 37 Points. Automotive Service Modern Auto Tech Study Guide Chapter 8 Pages 97 110 Electricity & Electronics 37 Points Automotive Service 1. is the movement of electrons ( ) from atom to atom. Every vehicle system uses some type of

More information

The rod and the cloth both become charged as electrons move between them.

The 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 information

Electricity. Teacher/Parent Notes.

Electricity. Teacher/Parent Notes. Electricity. Teacher/Parent Notes. Caution. The yellow fan. If this is used with 6 Volts, the fan will fly into the air with some force so it is advisable to keep faces well away from it! Batteries. Please

More information

Electromagnetism. Investigations

Electromagnetism. Investigations Electromagnetism Investigations Autumn 2015 ELECTROMAGNETISM Investigations Table of Contents Magnetic effect of an electric current* 2 Force on a current-carrying conductor in a magnetic field* 6 Faraday

More information

Learning Objectives:

Learning Objectives: Topic 5.5 High Power Switching Systems Learning Objectives: At the end of this topic you will be able to; recall the conditions under which a thyristor conducts; explain the significance of the following

More information

ELECTRICITY AND HWH COPPER CONDUCTOR

ELECTRICITY AND HWH COPPER CONDUCTOR 1. PREFACE +BATTERY TERMINAL +BATTERY TERMINAL + + + + + + + + + + + + ELECTRICITY AND HWH In the first section of this school, we did an in-depth study of general hydraulics. In section four, we applied

More information

FUN! Protected Under 18 U.S.C. 707

FUN! Protected Under 18 U.S.C. 707 FUN! Protected Under 18 U.S.C. 707 6 Volt Lantern Battery Spring terminals (also available in screw terminals) Alligator Clips Best method to attach wires to the spring terminals on a lantern battery.

More information

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.

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

More information

Lab 4. DC Circuits II

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

More information

ELECTRICITY & MAGNETISM - EXAMINATION QUESTIONS (4)

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

More information

Electric current, resistance and voltage in simple circuits

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

More information

SUPER CAPACITOR CHARGE CONTROLLER KIT

SUPER CAPACITOR CHARGE CONTROLLER KIT TEACHING RESOURCES ABOUT THE CIRCUIT COMPONENT FACTSHEETS HOW TO SOLDER GUIDE POWER YOUR PROJECT WITH THIS SUPER CAPACITOR CHARGE CONTROLLER KIT Version 2.0 Teaching Resources Index of Sheets TEACHING

More information

CHAPTER 19 DC Circuits Units

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 information

Transmission & Distribution Glossary of Electrical Terms

Transmission & Distribution Glossary of Electrical Terms Transmission & Distribution Glossary of Electrical s Breaker Panel Bushing Circuit Circuit Breaker Conductor Conduit Consumption Current Distribution Electricity (Static vs. Current) Electron Feeder The

More information

Electricity concepts teacher backgrounder

Electricity concepts teacher backgrounder Electricity concepts teacher backgrounder What is electricity, where does it come from and what do we use it for? Scientifically, electricity is the movement of electrons from one atom to another. This

More information

UNIT 4 Electrical Applications

UNIT 4 Electrical Applications UNIT 4 Electrical Applications Topic How do the sources used 4.1 to generate electrical energy compare? (Pages 244-51) Topic 4.1: How do the sources used to generate electrical energy compare? Topic 4.6:

More information

Name: Paisley Grammar Physics Department UNIT 2 USING ELECTRICITY PUPIL PACK. National 4/5 Physics. Study Guides Summary Notes Homework Sheets

Name: Paisley Grammar Physics Department UNIT 2 USING ELECTRICITY PUPIL PACK. National 4/5 Physics. Study Guides Summary Notes Homework Sheets Name: National 4/5 Physics Paisley Grammar Physics Department UNIT 2 USING ELECTRICITY PUPIL PACK Study Guides Summary Notes Homework Sheets USING ELECTRICITY Working at Home TO THE PUPIL Each day you

More information

Phys102 Lecture 12 Electric Currents and Resistance

Phys102 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 information

Chapter 23 Magnetic Flux and Faraday s Law of Induction

Chapter 23 Magnetic Flux and Faraday s Law of Induction Chapter 23 Magnetic Flux and Faraday s Law of Induction Units of Chapter 23 Induced Electromotive Force Magnetic Flux Faraday s Law of Induction Lenz s Law Mechanical Work and Electrical Energy Generators

More information

Electrical Energy and Power Ratings

Electrical Energy and Power Ratings Section 1 - From the Wall Socket Electrical Energy and ower Ratings Batteries and the mains are sources of electrical energy. Electrical appliances can then convert this into other forms of energy. e.g.

More information

SQUEEZY TORCH KIT ESSENTIAL INFORMATION. Version 2.0 LEARN ABOUT SIMPLE CIRCUITS WITH THIS

SQUEEZY TORCH KIT ESSENTIAL INFORMATION. Version 2.0 LEARN ABOUT SIMPLE CIRCUITS WITH THIS ESSENTIAL INFORMATION BUILD INSTRUCTIONS HOW THE KIT WORKS LED INFORMATION SHEET KIT CONTENTS LEARN ABOUT SIMPLE CIRCUITS WITH THIS SQUEEZY TORCH KIT Version 2.0 Index of Sheets ESSENTIAL INFORMATION Index

More information

Chapter: Electricity

Chapter: Electricity Chapter 13 Table of Contents Chapter: Electricity Section 1: Electric Charge Section 2: Electric Current Section 3: Electrical Energy 1 Electric Charge Positive and Negative Charge Atoms contain particles

More information

Unit 2: Electricity and Energy Resources

Unit 2: Electricity and Energy Resources 7 7 Table of Contents Unit 2: Electricity and Energy Resources Chapter 7: Electricity 7.1: Electric Charge 7.2: Electric Current 7.3: Electrical Energy 7.1 Electric Charge Positive and Negative Charge

More information

Chapter Assessment Use with Chapter 22.

Chapter 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 information

(3) When the brake pedal of the car is pushed, brake pads press against very hard steel discs.

(3) When the brake pedal of the car is pushed, brake pads press against very hard steel discs. Q1. A car travels along a level road at 20 metres per second. (a) Calculate the distance travelled by the car in 4 seconds. (Show your working.) (b) When the brake pedal of the car is pushed, brake pads

More information

Electrical Workplace Safety

Electrical Workplace Safety Electrical Workplace Safety Alan Kelly 23 rd September 2015 Objectives To provide an understanding of Electrical terms and the concepts of electricity To introduce Electrical Protective Devices and provide

More information

18.5. Electrical Circuits and Safety

18.5. Electrical Circuits and Safety 18.5 Electrical Circuits and Safety Electrical Circuits An electric circuit is a complete path through which a charge can flow. This is called a closed circuit. When the electric current cannot flow, this

More information

Lesson 2: Electrical Safety Ladders can become electrified if they come into contact with electric wires. Don't raise a ladder close to electric

Lesson 2: Electrical Safety Ladders can become electrified if they come into contact with electric wires. Don't raise a ladder close to electric Lesson 2: Electrical Safety Ladders can become electrified if they come into contact with electric wires. Don't raise a ladder close to electric lines. Never touch hanging or broken wires. Don't trim trees

More information

a) Understand the conditions for lighting a light bulb by connecting it to batteries with wires to make it illuminate.

a) Understand the conditions for lighting a light bulb by connecting it to batteries with wires to make it illuminate. This area deals with simple electric circuits and electromagnets. In this area, students learn about electricity for the first time and build an electromagnet and a simple circuit to compare the brightness

More information

Electromagnetism Junior Science. Easy to read Version

Electromagnetism Junior Science. Easy to read Version Electromagnetism Junior Science Easy to read Version 1a Electricity is a form of Energy Electricity is a type of energy. It can be transformed from many other types of energy; kinetic, chemical, nuclear

More information

Lecture Outline Chapter 23. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.

Lecture Outline Chapter 23. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc. Lecture Outline Chapter 23 Physics, 4 th Edition James S. Walker Chapter 23 Magnetic Flux and Faraday s Law of Induction Units of Chapter 23 Induced Electromotive Force Magnetic Flux Faraday s Law of Induction

More information

ELECTRICITY UNIT NAME

ELECTRICITY UNIT NAME ELECTRICITY UNIT NAME Atom An atom is the smallest particle characterizing an element. All matter in the universe is made up of a combination of different atoms. Atoms are made up of protons, neutrons

More information

Preface Cars and Boats 2.

Preface Cars and Boats 2. Preface Cars and Boats 2. The Cars and Boats 2 kit is one of a range of updated electrical/electronics kits produced by Cambridge BrainBox to provide children with exiting learning opportunities and many

More information

Electrical Engineering:

Electrical Engineering: Electrical Engineering: 1. Resistors: Remember resistors are components designed to limit the flow of electrons through an electrical circuit. Resistors are usually indicated with a colour code, as shown

More information

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:

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

More information

physicspp.com Lester Lefkowitz/CORBIS

physicspp.com Lester Lefkowitz/CORBIS What You ll Learn You will explain energy transfer in circuits. You will solve problems involving current, potential difference, and resistance. You will diagram simple electric circuits. Why t s mportant

More information

ELECTROMAGNETISM. 1. the number of turns. 2. An increase in current. Unlike an ordinary magnet, electromagnets can be switched on and off.

ELECTROMAGNETISM. 1. the number of turns. 2. An increase in current. Unlike an ordinary magnet, electromagnets can be switched on and off. ELECTROMAGNETISM Unlike an ordinary magnet, electromagnets can be switched on and off. A simple electromagnet consists of: - a core (usually iron) - several turns of insulated copper wire When current

More information

Section 4 WHAT MAKES CHARGE MOVE IN A CIRCUIT?

Section 4 WHAT MAKES CHARGE MOVE IN A CIRCUIT? Section 4 WHAT MAKES CHARGE MOVE IN A CIRCUIT? INTRODUCTION Why does capacitor charging stop even though a battery is still trying to make charge move? What makes charge move during capacitor discharging

More information

Conceptual Physics Electricity and Circuits Practice Exam 2011

Conceptual 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 information

Section 6 HOW ARE VALUES OF CIRCUIT VARIABLES MEASURED?

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

More information

Unit P.2, P2.3. Currents in electric circuits E ½. F Fuel gauge indicator. Fuel tank. Ammeter. Float. Battery. Sliding contact. Pivot 12V.

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.

More information

2011 Frequently Asked Questions BACK

2011 Frequently Asked Questions BACK 1. 2. Where can I pick up the RPM or Vehicle Speed signal? The Ram vehicles utilize CAN BUS type communication and therefore do not have traditional hard wiring for these signals. At this time Ram does

More information

4 Electric Circuits. TAKE A LOOK 2. Identify Below each switch, label the circuit as a closed circuit or an open circuit.

4 Electric Circuits. TAKE A LOOK 2. Identify Below each switch, label the circuit as a closed circuit or an open circuit. CHAPTER 17 4 Electric Circuits SECTION Introduction to Electricity BEFORE YOU READ After you read this section, you should be able to answer these questions: What are the three main parts of a circuit?

More information

HOW IS ELECTRICITY PRODUCED?

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

More information

COPYRIGHTED MATERIAL SYSTEM OVERVIEW, TERMINOLOGY, AND BASIC CONCEPTS CHAPTER OBJECTIVES HISTORY OF ELECTRIC POWER

COPYRIGHTED MATERIAL SYSTEM OVERVIEW, TERMINOLOGY, AND BASIC CONCEPTS CHAPTER OBJECTIVES HISTORY OF ELECTRIC POWER 1 CHAPTER OBJECTIVES SYSTEM OVERVIEW, TERMINOLOGY, AND BASIC CONCEPTS Discuss the history of electricity Present a basic overview of today s electric power system Discuss general terminology and basic

More information

BEC Student Learning Guide. Course Introduction. Automotive Electrical Course

BEC Student Learning Guide. Course Introduction. Automotive Electrical Course BEC Student Learning Guide Course Introduction Automotive Electrical Course S E R V I C E T R A I N I N G COURSE INTRODUCTION Welcome to Kia Automotive Electrical Electrical principles and hands-on diagnostics

More information

Chapter 21 Practical Electricity

Chapter 21 Practical Electricity Chapter 21 Practical Electricity (A) Electrical Power 1. State four applications of the heating effect of electricity. Home: o Used in electric kettles o Used in electric irons o Used in water heaters

More information

POWER and ELECTRIC CIRCUITS

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

More information

LIST OF PRACTICAL FOR IX-X GRADES

LIST OF PRACTICAL FOR IX-X GRADES LIST OF PRACTICAL FOR IX-X GRADES Standard experiments 1 To measure the area of cross section by measuring diameter of a solid cylinder with vernier callipers. 2 To measure the volume of a solid cylinder

More information

Diesel Technology: Electrical and Electronic Systems

Diesel Technology: Electrical and Electronic Systems Diesel Technology: Electrical and Electronic Systems Instructional/Task Analysis 2. Composition of atoms Unit 1: Introduction to Diesel Electrical and Electronic Systems 3. Electrical charges in atoms

More information

Alternating Current (AC) Electricity

Alternating Current (AC) Electricity Alternating Current (AC) Electricity Alternating current or AC electricity is the type of electricity commonly used in homes and businesses throughout the world. While the flow of electrons through a wire

More information

Current & Resistance. Electric Fish. Electric eel Torpedo ray. Dipole Potential

Current & Resistance. Electric Fish. Electric eel Torpedo ray. Dipole Potential Current & Resistance Current is the flow of charge. Such a flow is produced by a potential difference. The current depends on the potential difference and the resistance. The resistance is a property of

More information

SMITHS CAR CLOCK REPAIR KIT

SMITHS CAR CLOCK REPAIR KIT SMITHS CAR CLOCK REPAIR KIT Version 9 1 Introduction These instructions explain how to repair a Smith s electric car clock mechanism using the Clocks4Classics repair kit. This kit uses a specially developed

More information

Q1. (a) A science technician sets up the apparatus shown below to demonstrate the motor effect. He uses a powerful permanent magnet.

Q1. (a) A science technician sets up the apparatus shown below to demonstrate the motor effect. He uses a powerful permanent magnet. Q. (a) A science technician sets up the apparatus shown below to demonstrate the motor effect. He uses a powerful permanent magnet. The copper roller is placed across the metal rails. When the switch is

More information

user's manual nx frequency converters brake resistors

user's manual nx frequency converters brake resistors user's manual nx frequency converters brake resistors INDEX Document code: ud00971e Date edited: 1.10.010 1. GENERAL... 3 1.1 Requirement for braking... 3 1. Brake components... 3 1.3 Classes of use...

More information

Let's start our example problems with a D'Arsonval meter movement having a full-scale deflection rating of 1 ma and a coil resistance of 500 Ω:

Let's start our example problems with a D'Arsonval meter movement having a full-scale deflection rating of 1 ma and a coil resistance of 500 Ω: Voltmeter design As was stated earlier, most meter movements are sensitive devices. Some D'Arsonval movements have full-scale deflection current ratings as little as 50 µa, with an (internal) wire resistance

More information

WEDICO. `çãéäéíé=háí= q~êéjqçé=péãájqê~áäéê= Art.-No. 63

WEDICO. `çãéäéíé=háí= q~êéjqçé=péãájqê~áäéê= Art.-No. 63 WEDICO `çãéäéíé=háí= q~êéjqçé=péãájqê~áäéê= Art.-No. 6 Measurements Chassis and superstructure Finish Assembly Length...768 mm Width...7 mm Height...65 mm Weight...8 kg Frame made of aluminium section,

More information

Exercise 4-1. Friction Brakes EXERCISE OBJECTIVE DISCUSSION. Understand the construction and operation of friction brakes.

Exercise 4-1. Friction Brakes EXERCISE OBJECTIVE DISCUSSION. Understand the construction and operation of friction brakes. Exercise 4-1 Friction Brakes EXERCISE OBJECTIVE Understand the construction and operation of friction brakes. DISCUSSION Friction brakes, or magnetic brakes, are used to secure (hold) the position of a

More information

The Mechanical Equivalent of Heat

The Mechanical Equivalent of Heat The Mechanical Equivalent of Heat INTRODUCTION One of the most famous experiments of the 19 th century was Joule s experiment showing that mechanical energy can be converted to heat. This showed that heat

More information

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. 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,

More information

Unit D: Electrical Principles and Technologies

Unit D: Electrical Principles and Technologies Focusing Questions: Unit D: Electrical Principles and Technologies 1. How do we obtain and use electrical energy? 2. What significant principles are involved in developing, selecting, and using energyconsuming

More information

Electric Brakes. Braking Systems - Electric

Electric Brakes. Braking Systems - Electric Electric Brakes The electric brakes on your trailer are similar to the drum brakes on your automobile. The basic difference is that your automotive brakes are actuated by hydraulic pressure while your

More information

LEVEL 1/2 CAMBRIDGE NATIONAL AWARD/CERTIFICATE IN PRINCIPLES IN ENGINEERING AND ENGINEERING BUSINESS. Candidate Surname

LEVEL 1/2 CAMBRIDGE NATIONAL AWARD/CERTIFICATE IN PRINCIPLES IN ENGINEERING AND ENGINEERING BUSINESS. Candidate Surname SPECIMEN LEVEL 1/2 CAMBRIDGE NATIONAL AWARD/CERTIFICATE IN PRINCIPLES IN ENGINEERING AND ENGINEERING BUSINESS R101: Engineering Principles Candidates answer on the Question Paper OCR Supplied Materials:

More information

Circuit Analysis Questions A level standard

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

More information

9/13/2017. Friction, Springs and Scales. Mid term exams. Summary. Investigating friction. Physics 1010: Dr. Eleanor Hodby

9/13/2017. Friction, Springs and Scales. Mid term exams. Summary. Investigating friction. Physics 1010: Dr. Eleanor Hodby Day 6: Friction s Friction, s and Scales Physics 1010: Dr. Eleanor Hodby Reminders: Homework 3 due Monday, 10pm Regular office hours Th, Fri, Mon. Finish up/review lecture Tuesday Midterm 1 on Thursday

More information

Electromagnetic Induction (approx. 1.5 h) (11/9/15)

Electromagnetic Induction (approx. 1.5 h) (11/9/15) (approx. 1.5 h) (11/9/15) Introduction In 1819, during a lecture demonstration, the Danish scientist Hans Christian Oersted noticed that the needle of a compass was deflected when placed near a current-carrying

More information

vacon nx ac drives brake resistors user manual

vacon nx ac drives brake resistors user manual vacon nx ac drives brake resistors user manual GENERAL vacon 1 TABLE OF CONTENTS Document code: DPD01573C Date edited: 7.1.016 1. GENERAL... 1.1 The requirements for braking... 1. Brake components...

More information

Pulley. LEGO and the LEGO logo are trademarks of the/sont des marques de commerce de/son marcas registradas de LEGO Group The LEGO Group.

Pulley. LEGO and the LEGO logo are trademarks of the/sont des marques de commerce de/son marcas registradas de LEGO Group The LEGO Group. Pulley Simple Machines: Pulley Pulleys are wheels that are moved by ropes, chains or belts around their rims. Drive wheel Driven wheel In a belt driven pulley a continuous belt joins two pulley wheels.

More information

7J Electrical circuits Multiple-choice main test

7J 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 information

WEDICO. `çãéäéíé=háí= `çåí~áåéê=péãájqê~áäéê= Art.-No. 64 white

WEDICO. `çãéäéíé=háí= `çåí~áåéê=péãájqê~áäéê= Art.-No. 64 white WEDICO `çãéäéíé=háí= Art.-No. 6 white Measurements Chassis and superstructure Finish Assembly Length...78 mm Width...65 mm Height...58 mm Weight...7 kg Frame made of aluminium section, mm thick; torsion

More information

Chapter 13Electric Circuits

Chapter 13Electric Circuits Chapter 13Electric Circuits Suppose you had a stationary bicycle that was connected to a light bulb, so that when you pedal the bicycle, the energy from the turning wheels lights the bulb. How fast would

More information

Write the term that correctly completes the statement. Use each term once. ampere. electric current. resistor battery.

Write 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 information

English for Electrical Engineers

English for Electrical Engineers University of Kurdistan Department of Electrical & Computer Engineering English for Electrical Engineers H. Bevrani October, 2017 1 Contents Unit 1. Current, voltage and resistance... 3 Unit 2. Electrical

More information

Electronics 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 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 information

ABS Operator s Manual

ABS Operator s Manual ABS Operator s Manual Bendix Antilock Brake Systems With optional advanced antilock braking features: Automatic Traction Control (ATC) and RSP Roll Stability System Read, understand and follow the information

More information

Plasma Generator Kit. Images Scientific Instruments Inc.

Plasma Generator Kit. Images Scientific Instruments Inc. Images Scientific Instruments Inc. PG13 Plasma Generator Kit This kit generates high voltage using a fly back transformer. The Plasma generator kit can be used for many high voltage experiments. Images

More information

Transformers for Low-voltage Halogen Incandescent Lamps

Transformers for Low-voltage Halogen Incandescent Lamps Transformers for Low-voltage Halogen Incandescent Lamps Independent electronic converters 10 14 With DLI interface 14 Electronic built-in converters 15 17 Potentiometer and dimmers 18 Electromagnetic safety

More information

THE FOURTH STATE. Gaining a universal insight into the diagnosis of automotive ignition systems. By: Bernie Thompson

THE FOURTH STATE. Gaining a universal insight into the diagnosis of automotive ignition systems. By: Bernie Thompson THE FOURTH STATE Gaining a universal insight into the diagnosis of automotive ignition systems By: Bernie Thompson Did you know that the forth state of matter powers the spark ignition internal combustion

More information

9.2. The Power of Electricity. Did You Know? Words to Know

9.2. The Power of Electricity. Did You Know? Words to Know 9.2 The Power of Electricity Electrical power is the rate at which electric potential energy is being transformed. One joule (J) of electric potential energy transformed in one second is one watt (W) of

More information

Given the following items: wire, light bulb, & battery, think about how you can light the bulb.

Given the following items: wire, light bulb, & battery, think about how you can light the bulb. Light the Bulb! What You'll Do: Given the following items: wire, light bulb, & battery, think about how you can light the bulb. >>>>>>>>>Draw all the possible combinations that you can make with the bulb,

More information

FACT SHEET Standard: Electrical Safety

FACT SHEET Standard: Electrical Safety What is a Ground Fault Circuit Interrupter? FACT SHEET The ground-fault circuit interrupter, or GFCI, is a fast-acting circuit breaker designed to shut off electric power in the event of a ground-fault

More information