Outline Chapter 6 Electricity and Magnetism
|
|
- Jeremy Stone
- 7 years ago
- Views:
Transcription
1 Outline Chapter 6 Electricity and Magnetism 6-1. Positive and Negative Charge 6-2. What is Charge? 6-3. Coulomb s Law 6-4. Force on an Uncharged Object 6-5. Matter in Bulk 6-6. Conductors and Insulators 6-7. Superconductivity 6-8. The Ampere 6-9. Potential Difference Ohm's Law Electric Power Magnets Magnetic Field Oersted's Experiment Electromagnets Magnetic Force on a Current Electric Motors Electromagnetic Induction Transformers
2 6-1. Positive and Negative Charge Opposites attract-same charges repel Let s try it!
3 6-1. Positive and Negative Charge Electrons are stripped from one component and transferred to the other to cause both to be oppositely charged.
4 Fig. 6.2 Ben Franklin discovered electric charge.
5 6-2. What is Charge? Atoms are composed of protons (+), electrons (-) and neutrons. The nucleus contains the protons and neutrons and the electrons surround the nucleus.
6 6-2. What is Charge? Protons are much larger than electrons but have an equal and opposite charge. The coulomb (C) is the unit of electric charge. The basic quantity of electric charge (e) is 1.6 x C.
7 6-3. Coulomb s Law Q 1 Q 2 F = K R 2 Charles Coulomb ( )
8 6-4. Force on an Uncharged Particle Initially the paper is uncharged, but the comb polarizes the charges in the paper.
9 6-5. Matter in Bulk Coulomb's law resembles the law of gravity; however, gravitational forces are always attractive, whereas electric forces may be attractive or repulsive. Coulomb s Law Q 1 Q 2 F = K R 2 Law of Gravity M 1 M 2 F = G R 2 Gravitational forces dominate on a cosmic scale; electric forces dominate on an atomic scale.
10 6-6. Conductors and Insulators A conductor is a substance through which electric charge flows readily. An insulator is a substance that strongly resists the flow of electric charge. Semiconductors are substances whose electrical conductivity is between that of conductors and insulators.
11 Semiconductors Transistors are switches that conduct electricity only when a second source of electricity is energized. John Bardeen Nobel Prizes in 1956 and 1972 for developing the transistor and superconductivity. A B What a Transistor looks like. C A current will not flow from A to B unless C is energized.
12 Fig Enlargement of 5 mm square computer chip.
13 6-7. Superconductivity Superconductivity refers to the loss of all electrical resistance by certain materials at very low temperatures. Substances that are superconducting at 150K are now known which is warmer than liquid nitrogen (77K). Maglev Train in Japan
14 6-8. The Ampere The Ampere is a measure of how much electrical current is flowing and is measured in units of amps. Q I = ---- t
15 6-8. The Ampere The current varies depending on the force behind the current and the resistance to flow.
16 6-9. Potential Difference Potential difference, or voltage, is the electrical potential energy per coulomb of charge. Alessandro Volta ( ) J V = ---- C
17 Fig
18 6-10. Ohm s Law André Marie Ampére ( ) V I = ---- R Georg Ohm ( ) Resistance is a measure of opposition to the flow of charge and is measured in ohms (Ω)
19 Fig. 6.24
20 Fig. 6.22
21 6-11. Electric Power P= IV The power of an electric current is the rate at which it does work and is equal to the product of the current and the voltage of a circuit: The unit of electric power is the watt.the commercial unit of electric energy is the kilowatthour (kwh).
22 6-11. Electric Power Appliance Typical Power Ratings Power (W) Stove 12,000 Clothes Dryer 5,000 Heater 2,000 Dishwasher 1,600 Photocopier 1,400 Iron 1,000 Vacuum Cleaner 750 Coffee Maker 700 Refrigerator 400 Portable Sander 200 Fan 150 Personal Computer 150 TV Receiver 120 Fax Transmitter/Receiver 65 Charger for Electric Toothbrush 1
23 6-12. Magnets Every magnet has a north pole and a south pole.
24 6-13. Magnet Field How to make a magnet: Heat in magnetic field. Magnetic force lines.
25 6-14. Oersted s Experiment Hans Christian Oersted ( ) Hans Christian Oersted discovered in 1820 that an electric current near a compass causes the compass needle to be deflected. Oersted's experiment showed that every electric current has a magnetic field surrounding it.
26 6-14. Oersted s Experiment According to the right-hand rule, the electron current in a wire and the magnetic field it generates are perpendicular to each other.
27 6-14. Oersted s Experiment All magnetic fields originate from moving electric charges. A magnetic field appears only when relative motion is present between an electric charge and an observer. Electric and magnetic fields are different aspects of a single electromagnetic field.
28 6-15. Electromagnets An electromagnet consists of an iron core placed inside a wire coil. The magnetic field strength of a wire coil carrying an electric current increases in direct proportion to the number of turns of the coil.
29 6-15. Electromagnets An electromagnet can be used to move large quantities of metal. When the current is on the magnet will pick up the metal. When you want to drop it you turn off the power and the electromagnet is disabled and the metal drops.
30 6-16. Magnetic Force on a A magnetic field exerts a sideways push on an electric current with the maximum push occurring when the current is perpendicular to the magnetic field. Currents exert magnetic forces on each other. The forces are attractive when parallel currents are in the same direction and are repulsive when the parallel currents are in opposite directions. Current
31 Fig The experimental Japanese Maglev train uses magnetic forces for both support and propulsion.
32 How a TV works.
33 An electric motor uses the sideways push of a magnetic field to turn a current-carrying wire loop. Electric motors use a commutator to change the direction of the current in the loop. Alternating current electric motors do not use commutators Electric Motors
34 6-18. Electromagnetic Induction The effect of producing an induced current is known as electromagnetic induction. The direction of the induced current can be reversed by reversing the motion of the wire or reversing the field direction. The strength of the current depends on the strength of the magnetic field and the speed of the wire's motion.
35 Fig Michael Faraday ( ) built the first electric motor and discovered magnetic induction. The stationary windings of a large electric motor. magnetic forces underlie the operation of such motors.
36 Sharks navigate with the help of the earth s magnetic field. They detect the field using electromagnetic induction. Fig. 6.44
37 Alternating and Direct Current Alternating current (ac) is current that flows in a back-andforth manner; household current changes direction 120 times each second (60 Hz). Direct current (dc) flows in one direction. The ac generator (or alternator) produces an ac current and can be modified to produce dc current by 1. Use of a commutator. 2. Use of a rectifier which permits current to pass through it in only one direction.
38 6-19. Transformers A transformer is a device composed of two unconnected coils, usually wrapped around a soft iron core, that can increase or decrease the voltage of ac current.
39 6-19. Transformers A transformer is used to step the voltage down and the current up (P=IV) so that we can use it. Low power is desired for the transport of electricity long distances to avoid loss of energy to heat loss. A moving coil activated by voice vibrations is used as a microphone. The coil induces a current in the magnet that can be amplified or recorded.
40 6-19. Transformers A taperecorder records signals from a microphone on magnetic tape which then can be run across a magnet and played back.
41 Lecture Quiz 6 1. What happens when two positive charges come together? 2. What is Ohm s Law? 3. Why are transformers used on telephone poles? 4. What is the difference between an electric motor and an electric generator? 5. Why is AC current best to use at home?
42
STUDY GUIDE: ELECTRICITY AND MAGNETISM
319 S. Naperville Road Wheaton, IL 60187 www.questionsgalore.net Phone: (630) 580-5735 E-Mail: info@questionsgalore.net Fax: (630) 580-5765 STUDY GUIDE: ELECTRICITY AND MAGNETISM An atom is made of three
More informationIntroduction to Electricity & Magnetism. Dr Lisa Jardine-Wright Cavendish Laboratory
Introduction to Electricity & Magnetism Dr Lisa Jardine-Wright Cavendish Laboratory Examples of uses of electricity Christmas lights Cars Electronic devices Human body Electricity? Electricity is the presence
More information1. The diagram below represents magnetic lines of force within a region of space.
1. The diagram below represents magnetic lines of force within a region of space. 4. In which diagram below is the magnetic flux density at point P greatest? (1) (3) (2) (4) The magnetic field is strongest
More informationElectroMagnetic Induction. AP Physics B
ElectroMagnetic Induction AP Physics B What is E/M Induction? Electromagnetic Induction is the process of using magnetic fields to produce voltage, and in a complete circuit, a current. Michael Faraday
More informationPS-6.2 Explain the factors that determine potential and kinetic energy and the transformation of one to the other.
PS-6.1 Explain how the law of conservation of energy applies to the transformation of various forms of energy (including mechanical energy, electrical energy, chemical energy, light energy, sound energy,
More informationMagnetism. Magnetism. Magnetic Fields and Magnetic Domains. Magnetic Fields and Magnetic Domains. Creating and Destroying a Magnet
Magnetism Magnetism Opposite poles attract and likes repel Opposite poles attract and likes repel Like electric force, but magnetic poles always come in pairs (North, South) Like electric force, but magnetic
More informationMagnetism Basics. Magnetic Domains: atomic regions of aligned magnetic poles Random Alignment Ferromagnetic Alignment. Net Effect = Zero!
Magnetism Basics Source: electric currents Magnetic Domains: atomic regions of aligned magnetic poles Random Alignment Ferromagnetic Alignment Net Effect = Zero! Net Effect = Additive! Bipolar: all magnets
More informationMotor Fundamentals. DC Motor
Motor Fundamentals Before we can examine the function of a drive, we must understand the basic operation of the motor. It is used to convert the electrical energy, supplied by the controller, to mechanical
More informationUNIT D ELECTRICAL PRINCIPLES & TECHNOLOGIES. Science 9
UNIT D ELECTRICAL PRINCIPLES & TECHNOLOGIES Science 9 LEARNING GOALS Investigate and interpret devices that convert various forms of energy Describe technologies for the transfer and control of electrical
More informationInductors & Inductance. Electronic Components
Electronic Components Induction In 1824, Oersted discovered that current passing though a coil created a magnetic field capable of shifting a compass needle. Seven years later, Faraday and Henry discovered
More information101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY. Cutler-Hammer
101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY Cutler-Hammer WELCOME Welcome to Module 2, Fundamentals of Electricity. This module will cover the fundamentals of electricity in a practical
More informationChapter 22: Electric motors and electromagnetic induction
Chapter 22: Electric motors and electromagnetic induction The motor effect movement from electricity When a current is passed through a wire placed in a magnetic field a force is produced which acts on
More informationELECTRICAL FUNDAMENTALS
General Electricity is a form of energy called electrical energy. It is sometimes called an "unseen" force because the energy itself cannot be seen, heard, touched, or smelled. However, the effects of
More informationChapter 7. Magnetism and Electromagnetism ISU EE. C.Y. Lee
Chapter 7 Magnetism and Electromagnetism Objectives Explain the principles of the magnetic field Explain the principles of electromagnetism Describe the principle of operation for several types of electromagnetic
More informationGenTech Practice Questions
GenTech Practice Questions Basic Electronics Test: This test will assess your knowledge of and ability to apply the principles of Basic Electronics. This test is comprised of 90 questions in the following
More informationObjectives 200 CHAPTER 4 RESISTANCE
Objectives Explain the differences among conductors, insulators, and semiconductors. Define electrical resistance. Solve problems using resistance, voltage, and current. Describe a material that obeys
More informationForce on Moving Charges in a Magnetic Field
[ Assignment View ] [ Eðlisfræði 2, vor 2007 27. Magnetic Field and Magnetic Forces Assignment is due at 2:00am on Wednesday, February 28, 2007 Credit for problems submitted late will decrease to 0% after
More informationPhysics 30 Worksheet #10 : Magnetism From Electricity
Physics 30 Worksheet #10 : Magnetism From Electricity 1. Draw the magnetic field surrounding the wire showing electron current below. x 2. Draw the magnetic field surrounding the wire showing electron
More informationPreview of Period 16: Motors and Generators
Preview of Period 16: Motors and Generators 16.1 DC Electric Motors What causes the rotor of a motor to spin? 16.2 Simple DC Motors What causes a changing magnetic field in the simple coil motor? 16.3
More informationObjectives. Capacitors 262 CHAPTER 5 ENERGY
Objectives Describe a capacitor. Explain how a capacitor stores energy. Define capacitance. Calculate the electrical energy stored in a capacitor. Describe an inductor. Explain how an inductor stores energy.
More informationDC GENERATOR THEORY. LIST the three conditions necessary to induce a voltage into a conductor.
DC Generators DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of factors. EO 1.5 LIST the three conditions necessary to induce a voltage into
More informationThe unifying field Theory
The unifying field Theory M T Keshe 2000-2009, all rights reserved Date of release 28.10.2009 Abstract In this paper the origin of electromagnetic fields or electromagnetism and how they are created within
More informationDIRECT CURRENT GENERATORS
DIRECT CURRENT GENERATORS Revision 12:50 14 Nov 05 INTRODUCTION A generator is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction. This principle
More informationThe purposes of this experiment are to test Faraday's Law qualitatively and to test Lenz's Law.
260 17-1 I. THEORY EXPERIMENT 17 QUALITATIVE STUDY OF INDUCED EMF Along the extended central axis of a bar magnet, the magnetic field vector B r, on the side nearer the North pole, points away from this
More informationThis topic explores the key concepts of magnetism as they relate to: the phenomenon of magnetism magnetic forces and fields a theory of magnetism.
Magnetism Introduction This topic explores the key concepts of magnetism as they relate to: the phenomenon of magnetism magnetic forces and fields a theory of magnetism. Key concepts of magnetism The activities
More informationELECTRODYNAMICS 05 AUGUST 2014
ELECTRODYNAMICS 05 AUGUST 2014 In this lesson we: Lesson Description Discuss the motor effect Discuss how generators and motors work. Summary The Motor Effect In order to realise the motor effect, the
More informationElectricity. Atoms. Protons, Neutrons, and Electrons. Electricity is Moving Electrons. Atom
Electricity is a mysterious force. We can t see it like we see the sun. We can t hold it like we hold coal. We know when it is working, but it is hard to know exactly what it is. Before we can understand
More informationMagnetism. d. gives the direction of the force on a charge moving in a magnetic field. b. results in negative charges moving. clockwise.
Magnetism 1. An electron which moves with a speed of 3.0 10 4 m/s parallel to a uniform magnetic field of 0.40 T experiences a force of what magnitude? (e = 1.6 10 19 C) a. 4.8 10 14 N c. 2.2 10 24 N b.
More informationChapter 11. Inductors ISU EE. C.Y. Lee
Chapter 11 Inductors Objectives Describe the basic structure and characteristics of an inductor Discuss various types of inductors Analyze series inductors Analyze parallel inductors Analyze inductive
More informationChapter 2: Forms of Energy
Chapter 2: Forms of Energy Goals of Period 2 Section 2.1: To describe the forms of energy Section 2.2: To illustrate conversions from one form of energy to another Section 2.3 To describe energy storage
More informationMaking an Electromagnet Grade 4
TEACHING LEARNING COLLABORATIVE (TLC) PHYSICAL SCIENCE Making an Electromagnet Grade 4 Created by: Maria Schetter (Terrace Heights Elementary School), Stella Winckler (Lucerne Elementary School), Karen
More informationInduced voltages and Inductance Faraday s Law
Induced voltages and Inductance Faraday s Law concept #1, 4, 5, 8, 13 Problem # 1, 3, 4, 5, 6, 9, 10, 13, 15, 24, 23, 25, 31, 32a, 34, 37, 41, 43, 51, 61 Last chapter we saw that a current produces a magnetic
More informationTable of Contents 1. Introduction 2. Electrical Fundamentals Electron Theory Matter 4 MOLECULE
Table of Contents 1. Introduction 3 2. Electrical Fundamentals 4 Electron Theory 4 Matter 4 MOLECULE 5 The atom 6 Atom construction 7 Electrical charges 11 Balanced atoms 12 Ions 13 Electron orbits 15
More informationTheory of Heating by Induction
CHAPTER 2 Theory of Heating by Induction INDUCTION HEATING was first noted when it was found that heat was produced in transformer and motor windings, as mentioned in the Chapter Heat Treating of Metal
More informationThe rate of change of velocity with respect to time. The average rate of change of distance/displacement with respect to time.
H2 PHYSICS DEFINITIONS LIST Scalar Vector Term Displacement, s Speed Velocity, v Acceleration, a Average speed/velocity Instantaneous Velocity Newton s First Law Newton s Second Law Newton s Third Law
More informationSECTION 4 ELECTRIC MOTORS UNIT 17: TYPES OF ELECTRIC MOTORS
SECTION 4 ELECTRIC MOTORS UNIT 17: TYPES OF ELECTRIC MOTORS UNIT OBJECTIVES After studying this unit, the reader should be able to Describe the different types of open single-phase motors used to drive
More informationChen. Vibration Motor. Application note
Vibration Motor Application note Yangyi Chen April 4 th, 2013 1 Table of Contents Pages Executive Summary ---------------------------------------------------------------------------------------- 1 1. Table
More informationChapter 2: Forms of Energy
Chapter 2: Forms of Energy Goals of Period 2 Section 2.1: To describe the forms of energy Section 2.2: To illustrate conversions from one form of energy to another Section 2.3: To define the efficiency
More informationEnergy Transformations
Energy Transformations Concept Sheet Energy Transformations PS.6: The student will investigate and understand states and forms of energy and how energy is transferred and transformed. 1. Energy is the
More informationAircraft Electrical System
Chapter 9 Aircraft Electrical System Introduction The satisfactory performance of any modern aircraft depends to a very great degree on the continuing reliability of electrical systems and subsystems.
More informationGeneral Physics (PHY 2140)
General Physics (PHY 2140) Lecture 12 Electricity and Magnetism Magnetism Magnetic fields and force Application of magnetic forces http://www.physics.wayne.edu/~apetrov/phy2140/ Chapter 19 1 Department
More informationDC generator theory. Resources and methods for learning about these subjects (list a few here, in preparation for your research):
DC generator theory 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/,
More informationPhysics 112 Homework 5 (solutions) (2004 Fall) Solutions to Homework Questions 5
Solutions to Homework Questions 5 Chapt19, Problem-2: (a) Find the direction of the force on a proton (a positively charged particle) moving through the magnetic fields in Figure P19.2, as shown. (b) Repeat
More informationStudents will investigate the characteristics of electromagnetism and then use what they learn to plan and conduct an experiment on electromagnets.
Electromagnetic Power! Lesson Overview Students will investigate the characteristics of electromagnetism and then use what they learn to plan and conduct an experiment on electromagnets. Suggested Grade
More informationCLASS TEST GRADE 11. PHYSICAL SCIENCES: PHYSICS Test 3: Electricity and magnetism
CLASS TEST GRADE 11 PHYSICAL SCIENCES: PHYSICS Test 3: Electricity and magnetism MARKS: 45 TIME: 1 hour INSTRUCTIONS AND INFORMATION 1. Answer ALL the questions. 2. You may use non-programmable calculators.
More informationChapter 21. Magnetic Forces and Magnetic Fields
Chapter 21 Magnetic Forces and Magnetic Fields 21.1 Magnetic Fields The needle of a compass is permanent magnet that has a north magnetic pole (N) at one end and a south magnetic pole (S) at the other.
More informationElectric Motor. Your Activity Build a simple electric motor. Material. Create. Science Topics. What s going on? 2 Jumbo Safety Pins (or Paper Clips)
Electric Motor Your Activity Build a simple electric motor Material D-Cell Battery Coil made out of magnet wire 2 Jumbo Safety Pins (or Paper Clips) Scissors (or sand paper) 1 Rubber Band Ceramic Magnet
More informationElectronics. Basic Concepts. Yrd. Doç. Dr. Aytaç GÖREN Yrd. Doç. Dr. Levent ÇETİN
Electronics Basic Concepts Electric charge Ordinary matter is made up of atoms which have positively charged nuclei and negatively charged electrons surrounding them. Charge is quantized as the subtraction
More informationComponents. Transformers
Components Transformers How does a transformer work? A transformer is based on a simple fact about electricity: when a fluctuating electric current flows through a wire, it generates a magnetic field (an
More informationAC generator theory. Resources and methods for learning about these subjects (list a few here, in preparation for your research):
AC generator theory 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/,
More informationMODEL OF THE ELECTROMAGNETIC LEVITATION DEVICE
MODEL OF THE ELECTROMAGNETIC LEVITATION DEVICE Tomáš Hron CZECH TECHNICAL UNIVERSITY IN PRAGUE Faculty of Electrical Engineering Department of Electrotechnology 1. Introduction From the principal point
More informationForms of Energy. Freshman Seminar
Forms of Energy Freshman Seminar Energy Energy The ability & capacity to do work Energy can take many different forms Energy can be quantified Law of Conservation of energy In any change from one form
More informationMagnetic Fields. I. Magnetic Field and Magnetic Field Lines
Magnetic Fields I. Magnetic Field and Magnetic Field Lines A. The concept of the magnetic field can be developed in a manner similar to the way we developed the electric field. The magnitude of the magnetic
More informationGrade Level Expectations for the Sunshine State Standards
for the Sunshine State Standards FLORIDA DEPARTMENT OF EDUCATION http://www.myfloridaeducation.com/ The seventh grade student: The Nature of Matter uses a variety of measurements to describe the physical
More informationLine Reactors and AC Drives
Line Reactors and AC Drives Rockwell Automation Mequon Wisconsin Quite often, line and load reactors are installed on AC drives without a solid understanding of why or what the positive and negative consequences
More informationElectricity. Introduction. Key concepts of electricity. Static electricity. Current electricity
Electricity Introduction This topic explores the key concepts of electricity as they relate to: static electricity current electricity higher order models of electric circuits household electricity electricity
More informationAll About Electric Motors
All About Electric Motors Provided by TryEngineering - Click here to provide feedback on this lesson. Lesson Focus Electric Motors: their principles and everyday uses. Note: This lesson plan is designed
More informationCHAPTER - 1. Chapter ONE: WAVES CHAPTER - 2. Chapter TWO: RAY OPTICS AND OPTICAL INSTRUMENTS. CHAPTER - 3 Chapter THREE: WAVE OPTICS PERIODS PERIODS
BOARD OF INTERMEDIATE EDUCATION, A.P., HYDERABAD REVISION OF SYLLABUS Subject PHYSICS-II (w.e.f 2013-14) Chapter ONE: WAVES CHAPTER - 1 1.1 INTRODUCTION 1.2 Transverse and longitudinal waves 1.3 Displacement
More informationBuild A Simple Electric Motor (example #1)
PHY115 Experiment 11 Build A Simple Electric Motor (example #1) MATERIAL This is the necessary equipment. Present any list of material in your written lab report. 1.5 V battery in series 1 ceramic magnet
More informationGCSE Additional Science Physics Contents Guide
GCSE Additional Science Contents Guide Copyright Boardworks Ltd 2007 Boardworks Ltd The Gallery 54 Marston Street Oxford OX4 1LF 08703 50 55 60 enquiries@boardworks.co.uk www.boardworks.co.uk 04-07 contains
More informationMotors and Generators
Motors and Generators Electro-mechanical devices: convert electrical energy to mechanical motion/work and vice versa Operate on the coupling between currentcarrying conductors and magnetic fields Governed
More informationElectricity and Magnetism
Electricity and Magnetism sections 1 Electric Charge and Forces 2 Electric Current 3 Magnetism Lab Batteries in eries and Parallel Lab Magnets and Electric Current Virtual Lab How are voltage, current,
More informationChapter 27 Magnetic Field and Magnetic Forces
Chapter 27 Magnetic Field and Magnetic Forces - Magnetism - Magnetic Field - Magnetic Field Lines and Magnetic Flux - Motion of Charged Particles in a Magnetic Field - Applications of Motion of Charged
More informationphysics 112N magnetic fields and forces
physics 112N magnetic fields and forces bar magnet & iron filings physics 112N 2 bar magnets physics 112N 3 the Earth s magnetic field physics 112N 4 electro -magnetism! is there a connection between electricity
More informationInductance. Motors. Generators
Inductance Motors Generators Self-inductance Self-inductance occurs when the changing flux through a circuit arises from the circuit itself. As the current increases, the magnetic flux through a loop due
More informationI. R. D. T INSTITUTE OF RESEARCH DEVELOPMENT AND TRAINING
I. R. D. T INSTITUTE OF RESEARCH DEVELOPMENT AND TRAINING SYLLABUS SIX MONTHS FULL TIME Repair and Maintenance of Electrical gadgets EFFECTIVE FROM:- UNDER DEVELOPMENT Prepared By: Curriculum Development
More informationLab 37: Magnetic Field ; Magnets - Drawing magnetic fields - Magnetic poles - Forces between magnets
Lab 37: Magnetic Field ; Magnets - Drawing magnetic fields - Magnetic poles - Forces between magnets 1) The following simple magnet configurations were shown to you in class - draw the magnetic field lines
More information3.- What atom s particle moves through a conductor material? 4.- Which are the electric components of an elemental electric circuit?
1.- What is electricity? 2.- Write down the name of the atom s particles. 3.- What atom s particle moves through a conductor material? 4.- Which are the electric components of an elemental electric circuit?
More informationInductors. AC Theory. Module 3
Module 3 AC Theory What you ll learn in Module 3. Section 3.1 Electromagnetic Induction. Magnetic Fields around Conductors. The Solenoid. Section 3.2 Inductance & Back e.m.f. The Unit of Inductance. Factors
More informationForce on a square loop of current in a uniform B-field.
Force on a square loop of current in a uniform B-field. F top = 0 θ = 0; sinθ = 0; so F B = 0 F bottom = 0 F left = I a B (out of page) F right = I a B (into page) Assume loop is on a frictionless axis
More informationElectricity and Magnetism
Electricity and Magnetism This is a high-energy demonstration that explores the positives and negatives of static electricity. Audience members participate in simple and not-so-simple experiments, utilizing
More informationThe DC Motor/Generator Commutation Mystery. Commutation and Brushes. DC Machine Basics
The DC Motor/Generator Commutation Mystery One small, yet vital piece of the DC electric motor puzzle is the carbon brush. Using the correct carbon brush is a key component for outstanding motor life,
More informationSection 9.5 Electric Motors
Power connection Brush Commutator Bearing Electromagnet Armature haft Bearing Cooling fan ection 9.5 Electric Motors Electric motors spin the parts of many household machines. ometimes this rotary motion
More informationPHYS 222 Spring 2012 Final Exam. Closed books, notes, etc. No electronic device except a calculator.
PHYS 222 Spring 2012 Final Exam Closed books, notes, etc. No electronic device except a calculator. NAME: (all questions with equal weight) 1. If the distance between two point charges is tripled, the
More informationChapter 5. Components, Symbols, and Circuitry of Air-Conditioning Wiring Diagrams
Chapter 5 Components, Symbols, and Circuitry of Air-Conditioning Wiring Diagrams Objectives Upon completion of this course, you will be able to: Explain what electrical loads are and their general purpose
More informationQuiz: Work and Energy
Quiz: Work and Energy A charged particle enters a uniform magnetic field. What happens to the kinetic energy of the particle? (1) it increases (2) it decreases (3) it stays the same (4) it changes with
More information7. What is the current in a circuit if 15 coulombs of electric charge move past a given point in 3 seconds? (1) 5 A (3) 18 A (2) 12 A (4) 45 A
1. Compared to the number of free electrons in a conductor, the number of free electrons in an insulator of the same volume is less the same greater 2. Most metals are good electrical conductors because
More informationConceptual: 1, 3, 5, 6, 8, 16, 18, 19. Problems: 4, 6, 8, 11, 16, 20, 23, 27, 34, 41, 45, 56, 60, 65. Conceptual Questions
Conceptual: 1, 3, 5, 6, 8, 16, 18, 19 Problems: 4, 6, 8, 11, 16, 20, 23, 27, 34, 41, 45, 56, 60, 65 Conceptual Questions 1. The magnetic field cannot be described as the magnetic force per unit charge
More informationE/M Experiment: Electrons in a Magnetic Field.
E/M Experiment: Electrons in a Magnetic Field. PRE-LAB You will be doing this experiment before we cover the relevant material in class. But there are only two fundamental concepts that you need to understand.
More informationScience Standard 3 Energy and Its Effects Grade Level Expectations
Science Standard 3 Energy and Its Effects Grade Level Expectations Science Standard 3 Energy and Its Effects The flow of energy drives processes of change in all biological, chemical, physical, and geological
More informationMagnetic Field and Magnetic Forces
Chapter 27 Magnetic Field and Magnetic Forces PowerPoint Lectures for University Physics, Thirteenth Edition Hugh D. Young and Roger A. Freedman Lectures by Wayne Anderson Goals for Chapter 27 Magnets
More informationELECTRICITY UNIT SCIENCE AND TECHNOLGY- CYCLE 3 NAME GROUP. Teacher: Mr. D. Strina E-mail: dstrina@swlauriersb.qc.ca MC CAIG ELEMENTARY SCHOOL
ELECTRICITY UNIT SCIENCE AND TECHNOLGY- CYCLE 3 NAME GROUP Teacher: Mr. D. Strina E-mail: dstrina@swlauriersb.qc.ca MC CAIG ELEMENTARY SCHOOL CLASS NOTES--- Atom An atom is the smallest particle characterizing
More informationLinear DC Motors. 15.1 Magnetic Flux. 15.1.1 Permanent Bar Magnets
Linear DC Motors The purpose of this supplement is to present the basic material needed to understand the operation of simple DC motors. This is intended to be used as the reference material for the linear
More informationElectrical Domestic Appliances (EDA)
14 Electrical Domestic Appliances (EDA) Paper-I Theory 40 Practical - 60 Unit. I : Current Electricity: Electricity as a source of energy, definition of resistance, voltage, current, power, energy and
More informationMagnetic Fields and Their Effects
Name Date Time to Complete h m Partner Course/ Section / Grade Magnetic Fields and Their Effects This experiment is intended to give you some hands-on experience with the effects of, and in some cases
More informationSingle-Phase AC Synchronous Generator
ST Series Single-Phase AC Synchronous Generator Instructions for Operation and Maintenance English to English translation by R.G. Keen, May 2004. ST Series of Single-Phase AC Synchronous Generators Description
More informationGeorgia Performance Standards Framework for Physical Science 8 th Grade. Powering Satellites
The following instructional plan is part of a GaDOE collection of Unit Frameworks, Performance Tasks, examples of Student Work, and Teacher Commentary. Many more GaDOE approved instructional plans are
More informationVoltage, Current, and Resistance
Voltage, Current, and Resistance 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/,
More informationEðlisfræði 2, vor 2007
[ Assignment View ] [ Pri Eðlisfræði 2, vor 2007 28. Sources of Magnetic Field Assignment is due at 2:00am on Wednesday, March 7, 2007 Credit for problems submitted late will decrease to 0% after the deadline
More informationMEASURING INSTRUMENTS. By: Nafees Ahmed, Asstt, Prof, EE Deptt, DIT, Dehradun
MEASURING INSTRUMENTS By: Nafees Ahmed, Asstt, Prof, EE Deptt, DIT, Dehradun MEASURING INSTRUMENTS The device used for comparing the unknown quantity with the unit of measurement or standard quantity is
More informationCOURSE: PHYSICS DEGREE: COMPUTER ENGINEERING year: 1st SEMESTER: 1st
COURSE: PHYSICS DEGREE: COMPUTER ENGINEERING year: 1st SEMESTER: 1st WEEKLY PROGRAMMING WEE K SESSI ON DESCRIPTION GROUPS GROUPS Special room for LECTU PRAC session RES TICAL (computer classroom, audiovisual
More informationUnderstanding the Alternator
http://www.autoshop101.com THIS AUTOMOTIVE SERIES ON ALTERNATORS HAS BEEN DEVELOPED BY KEVIN R. SULLIVAN PROFESSOR OF AUTOMOTIVE TECHNOLOGY AT SKYLINE COLLEGE SAN BRUNO, CALIFORNIA ALL RIGHTS RESERVED
More informationSCIENCE CONCEPTS OF ELECTRICITY AND GENERATION AND DISTRIBUTION
Lesson Notes: Middle Grades SCIENCE CONCEPTS OF ELECTRICITY AND GENERATION AND DISTRIBUTION Magnetism and electricity are closely related. To understand electricity, you first need to know about magnets.
More informationReview Questions PHYS 2426 Exam 2
Review Questions PHYS 2426 Exam 2 1. If 4.7 x 10 16 electrons pass a particular point in a wire every second, what is the current in the wire? A) 4.7 ma B) 7.5 A C) 2.9 A D) 7.5 ma E) 0.29 A Ans: D 2.
More information5. Measurement of a magnetic field
H 5. Measurement of a magnetic field 5.1 Introduction Magnetic fields play an important role in physics and engineering. In this experiment, three different methods are examined for the measurement of
More informationElectromagnetism Extra Study Questions Short Answer
Electromagnetism Extra Study Questions Short Answer 1. The electrostatic force between two small charged objects is 5.0 10 5 N. What effect would each of the following changes have on the magnitude of
More informationCharges, voltage and current
Charges, voltage and current Lecture 2 1 Atoms and electrons Atoms are built up from Positively charged nucleus Negatively charged electrons orbiting in shells (or more accurately clouds or orbitals) -
More informationA Practical Guide to Free Energy Devices
A Practical Guide to Free Energy Devices Part PatD9: Last updated: 28th January 2006 Author: Patrick J. Kelly Please note that this is a re-worded excerpt from this patent. If the content interests you,
More informationChapter 19: Magnetic Forces and Fields
Chapter 19: Magnetic Forces and Fields Magnetic Fields Magnetic Force on a Point Charge Motion of a Charged Particle in a Magnetic Field Crossed E and B fields Magnetic Forces on Current Carrying Wires
More informationCircuit symbol. Each of the cells has a potential difference of 1.5 volts. Figure 1. Use the correct answer from the box to complete the sentence.
Q.(a) Draw one line from each circuit symbol to its correct name. Circuit symbol Name Diode Light-dependent resistor (LDR) Lamp Light-emitting diode (LED) (3) Figure shows three circuits. The resistors
More information