Electrodynamics. Review 8


 Jessie Shields
 4 years ago
 Views:
Transcription
1 Unit 8 eview: Electrodynamics eview 8 Electrodynamics 1. A 9.0 V battery is connected to a lightbulb which has a current of 0.5 A flowing through it. a. How much power is delivered to the b. How much energy will the bulb use in? c. How long would the bulb have to stay on to use 1 kwh of energy? 2. A 60 W lightbulb is connected to a 115 V power source. a. What is the current through the b. What is the resistance of the 3. A circuit is set up as shown in the diagram at the top right. a. What should the reading on the ammeter be? b. What should the reading on the voltmeter be? c. How much power is delivered to the resistor? d. How much energy is delivered to the resistor per hour? 4. A microwave draws a 15.0 A current from a 120 V power source. a. How much power is delivered to the microwave? b. How much energy does the microwave use each minute? 5. A 100 W lightbulb is turned on for two fifths of the time for 30 days. At a price of $0.29 per kwh, how much does the lightbulb cost to run during the 30 days? 6. A current of 0.85 A is measured through a 27 Ω resistor for. How much heat does the resistor generate? 7. A 60 W lightbulb has a resistance of 240 Ω. What is the current in the 8. What is the current through an 80.0 Ω resistor if the voltage drop across the resistor is 20 V? 9. A 60 W lightbulb and a 100 W lightbulb both are connected to a 120 V power source. Which bulb has the greater resistance? 10. A 12 V battery is used to power a 300 ma video camera. a. How much power does the battery provide to the camera? b. How much energy does the camera use in 1 s? c. How much energy does the camera use in? d. How long would it take the video camera to use 1 kwh of energy? 11. A lightbulb powered by a 120 V source has a resistance of 5.0 Ω at room temperature and Ω at operating temperature. a. What is the current when a 60 W bulb is turned on at room temperature? b. What is the power of this room temperature bulb? c. What is the current when the 60 W bulb is at operating temperature? d. What is the power of the bulb at operat ing temperature? 1
2 Unit 8 eview: Electrodynamics 12. A 240 V water heater has a resistance of 15 Ω. a. What is the power of the heater? b. What thermal energy is supplied by the heater in 15 min? c. Compare the power of the same 240 V water heater to a 120 V water heater, also with a resistance of 15 Ω. d. Compare the thermal energy of the 240 V water heater to a 120 V heater in a 15 min period? 13. How much power is dissipated in wires that have a current of 50 A and a resistance of Ω? 14. A longdistance hightension wire uses 500,000 V. a. What is the power output of these wires in watts, kilowatts, and megawatts if the current is 20 A? b. What is the power dissipated in the wires if the resistance is Ω? 15. Compare the energy a 120 W bulb uses per hour with the energy use in our of a 60 W bulb. 16. How much money would be saved by turning off one 100 W lightbulb 3 h/day for 365 days if the cost of electricity is $0.12 per kwh? 17. How much money can be saved by turning off a 500 W television set for /day for 365 days at $0.14 per kwh? 18. How much does it cost to operate a 1000 W blow dryer for 10 minutes at $0.23 per kwh? 19. A common household electric lightbulb produces of power in the form of light and heat from a filament powered by a standard electric socket of 120 V. a. What is the current through this bulb s filament? b. The lightbulb s efficiency is typically only 10%, which means only 10% of the power used is converted into light energy. How much energy in the form of heat does this bulb produce during of use? How much energy in the form of light does it produce during this same time interval? c. How much electric charge will pass through this bulb during? d. What is the resistance of the circuit? e. Explain why the filament in the circuit glows but the wires going to and from the lightbulb do not glow. 20. An electric stove uses a heating element that has several settings: warm, low, medium, and high. The owner s manual tells you that the control knob for the heating element is a potentiometer, a device that produces a variable resistance. a. If you increase the resistance of the heating element circuit, what happens to the current? b. How will increasing the resistance affect the power used by the circuit? c. Explain why a circuit with a high power rating gives off more heat than a circuit with a low power rating. d. redict which setting has the highest resistance. e. The warm setting uses 180 W, while the high setting uses 1200 W. Calculate the resistance of the circuit for each setting, assuming the voltage is 240 V. Does this calculation support your prediction? Explain. 2
3 Unit 8 eview: Electrodynamics 1a 1b = (9 V)(0.5 A) = 4.5 W = E t E = t E = (4.5 W)() E = J 3d 4a = E t E = t E = (54 W)() E = J = (120 V)(15 A) = 1800 W 1c 2a J = t J t = 222 h 2b 3a 3b 3c I = V 4b = E t E = t E = (1800 W)(60 s) E = J I = 115 V I = 0.52 A I = V = V I = 115 V 0.52 A = 220 Ω I = V I = 36 V 24 Ω I = 1.5 A 36 V = (36 V)(1.5 A) = 54 W J 1 s x 60 s 60 min x x 24 h 1 min 1 day x days 1 kwh x J x $ kwh = $ E = t E = I 2 t ( ) 2 ( 27 Ω) ( ) E = 0.85 A E = J 7 = I 2 8 I = I = 240 Ω I = 0.5 A I = V I = 20 V 80 Ω I = 0.25 A 3
4 Unit 8 eview: Electrodynamics 9 10a = V 2 = 120 V = 240 Ω = V 2 = 120 V 100 W = 144 Ω The has a greater resistance. 10b 3.6 J 10c 10d 11a 11b 11c 11d ( )( 0.3 A) = 12 V = 3.6 W 3.6 J 1 s = E E = J = t t = 278 h I = V I = 120 V 5 Ω I = 24 A ( )( 24 A) = 120 V = 2880 W I = V I = 120 V 100 Ω I = 1.2 A ( )( 1.2 A) = 120 V = 144 W 12a 12b 12c = 240 V 15 Ω = 3840 W E = t ( )( 900 s) E = 3840 W E = J = 120 V 15 Ω = 9 This is ¼ the power than it was at 240 V. 12d The energy will also be ¼ of what it was at 240 V. 13 = I 2 14a 14b ( ) 2 ( Ω) = 50 A = 37.5 W ( )( 20 A) = V = W = kw =10 MW = I 2 ( ) 2 ( Ω) = 20 A = 6 W 15 Half the power will use half the energy. 4
5 Unit 8 eview: Electrodynamics J 1 s 1 kwh J $ h 365 days 1 day 1 year $ e 20a The filament has a much higher resistance than the lead wires. All wires have the same current. = I 2 Higher resistance results in lower current. I = V/ J 1 kwh 1 s J $ days 1 day 1 year $ J 1 kwh 1 s J $ s 10 min 1 min 1 $ a I = V I = 120 V I = 0.5 A 20b Higher resistance results in lower power. / 20c ower is defined as the rate at which energy is transferred. Higher power means more energy transferred each second. 20d Warm is the lowest setting so it must have the least current and therefore the highest resistance. 20e = V 2 = 240 V 180 W = 320 Ω = V 2 = 240 V 1200 W = 48 Ω 19b 19c 19d 1 s 90% = J 1 s 10% = J 1 s = J = V 2 = 120 V = 240 Ω The higher resistance does result in lower power as predicted. 5
Chapter A 9.0V battery is connected to a lightbulb, as shown below. 9.0V Battery. a. How much power is delivered to the lightbulb?
Capter continued carges on te plates were reversed, te droplet would accelerate downward since all forces ten act in te same direction as gravity. 5. A 0.5F capacitor is able to store 7.0 0 C of carge
More informationphysics 4/7/2016 Chapter 31 Lecture Chapter 31 Fundamentals of Circuits Chapter 31 Preview a strategic approach THIRD EDITION
Chapter 31 Lecture physics FOR SCIENTISTS AND ENGINEERS a strategic approach THIRD EDITION randall d. knight Chapter 31 Fundamentals of Circuits Chapter Goal: To understand the fundamental physical principles
More informationClicker Session Currents, DC Circuits
Clicker Session Currents, DC Circuits Wires A wire of resistance R is stretched uniformly (keeping its volume constant) until it is twice its original length. What happens to the resistance? 1) it decreases
More information1 of 23. Boardworks Ltd Electrical Power
1 of 23 Boardworks Ltd 2016 Electrical Power Electrical Power 2 of 23 Boardworks Ltd 2016 What is electrical power? 3 of 23 Boardworks Ltd 2016 Electrical power is the rate at which energy is transferred
More informationChapter 21 Electric Current and Direct Current Circuits
Chapter 21 Electric Current and Direct Current Circuits Units of Chapter 21 Electric Current Resistance and Ohm s Law Energy and Power in Electric Circuits Resistors in Series and Parallel Kirchhoff s
More informationInsulators Nonmetals are very good insulators; their electrons are very tightly bonded and cannot move.
SESSION 11: ELECTRIC CIRCUITS Key Concepts Resistance and Ohm s laws Ohmic and nonohmic conductors Series and parallel connection Energy in an electric circuit Xplanation 1. CONDUCTORS AND INSULATORS
More informationChapter 25 Electric Currents and Resistance. Copyright 2009 Pearson Education, Inc.
Chapter 25 Electric Currents and Resistance 254 Resistivity Example 255: Speaker wires. Suppose you want to connect your stereo to remote speakers. (a) If each wire must be 20 m long, what diameter copper
More informationANSWERS AND MARK SCHEMES. (a) (i) 0.4 A 1. (ii) 0.4 A 1. (b) (i) potential difference = current resistance V 1. (ii) 1.6 V 1
QUESTIONSHEET 1 (a) (i) 0.4 A 1 (ii) 0.4 A 1 (b) (i) potential difference = current resistance 1 2.4 V 1 (ii) 1.6 V 1 (c) showing all working 1 correct answer with units for total resistance: 16 Ω 1 calculate
More informationElectrical equations calculations
Task Use the following equations to answer the questions. You may need to rearrange the equations and convert the units. An example has been done for you. P = I x V V = I x R P = I 2 x R E = P x t E =
More informationChapter 17 Electric Current and Resistance Pearson Education, Inc.c
Chapter 17 Electric Current and Resistance 2010 Pearson Education, Inc.c 1 Units of Chapter 17 Batteries and Direct Current Current and Drift Velocity Resistance and Ohm s Law Electric Power 2010 Pearson
More informationCurrent and Resistance
Current and Resistance 1 Define the current. Understand the microscopic description of current. Discuss the rat at which the power transfer to a device in an electric current. 2 21 Electric current 22
More informationElectric Current. Chapter 17. Electric Current, cont QUICK QUIZ Current and Resistance. Sections: 1, 3, 4, 6, 7, 9
Electric Current Chapter 17 Current and Resistance Sections: 1, 3, 4, 6, 7, 9 Whenever electric charges of like signs move, an electric current is said to exist The current is the rate at which the charge
More information670 Intro Physics Notes: Electric Current and Circuits
Name: Electric Current Date: / / 670 Intro Physics Notes: Electric Current and Circuits 1. Previously, we learned about static electricity. Static electricity deals with charges that are at rest. 2. Now
More informationElectricity. Prepared by Juan Blázquez, Alissa Gildemann. Electric charge is a property of all objects. It is responsible for electrical phenomena.
Unit 11 Electricity 1. Electric charge Electric charge is a property of all objects. It is responsible for electrical phenomena. Electrical phenomena are caused by the forces of attraction and repulsion.
More information1. Which of the following appliances makes use of the heating effect of electricity?
Name: ( ) Class: Date: ASSIGNMENT Chapter 15: Practical Electricity 25 MultipleChoice Questions (10 marks) 1. Which of the following appliances makes use of the heating effect of electricity? A Electric
More informationAgenda for Today. Elements of Physics II. Resistance Resistors Series Parallel Ohm s law Electric Circuits. Current Kirchoff s laws
Resistance Resistors Series Parallel Ohm s law Electric Circuits Physics 132: Lecture e 17 Elements of Physics II Current Kirchoff s laws Agenda for Today Physics 201: Lecture 1, Pg 1 Clicker Question
More informationCircuits. PHY2054: Chapter 18 1
Circuits PHY2054: Chapter 18 1 What You Already Know Microscopic nature of current Drift speed and current Ohm s law Resistivity Calculating resistance from resistivity Power in electric circuits PHY2054:
More informationAnswer Key. Chapter 23. c. What is the current through each resistor?
Chapter 23. Three 2.0 resistors are connected in series to a 50.0 power source. a. What is the equivalent resistance of the circuit? R R R 2 R 3 2.0 2.0 2.0 36.0 b. What is the current in the circuit?
More informationELECTRICITY. Prepared by: M. S. KumarSwamy, TGT(Maths) Page
ELECTRICITY 1. Name a device that helps to maintain a potential difference across a conductor. Cell or battery 2. Define 1 volt. Express it in terms of SI unit of work and charge calculate the amount of
More information10 N acts on a charge in an electric field of strength 250 N.C What is the value of the charge?
Year 11 Physics Electrical Energy in the Home Name: 1. Draw the electric field lines around a) a single positive charge b) between two opposite charged bodies c) two parallel plates + + + + + + +   
More information2/25/2014. Circuits. Properties of a Current. Conservation of Current. Definition of a Current A. I A > I B > I C B. I B > I A C. I C D. I A E.
Circuits Topics: Current Conservation of current Batteries Resistance and resistivity Simple circuits 0.1 Electromotive Force and Current Conventional current is the hypothetical flow of positive charges
More informationChapter 17. Current and Resistance. Sections: 1, 3, 4, 6, 7, 9
Chapter 17 Current and Resistance Sections: 1, 3, 4, 6, 7, 9 Equations: 2 2 1 e r q q F = k 2 e o r Q k q F E = = I R V = A L R ρ = )] ( 1 [ o o T T + = α ρ ρ V I V t Q P = = R V R I P 2 2 ) ( = = C Q
More informationUse these circuit diagrams to answer question 1. A B C
II Circuit Basics Use these circuit diagrams to answer question 1. B C 1a. One of the four voltmeters will read 0. Put a checkmark beside it. b. One of the ammeters is improperly connected. Put a checkmark
More informationChapter 19. Electric Current, Resistance, and DC Circuit Analysis
Chapter 19 Electric Current, Resistance, and DC Circuit Analysis I = dq/dt Current is charge per time SI Units: Coulombs/Second = Amps Direction of Electron Flow _ + Direction of Conventional Current:
More informationConcepTest Clicker Questions. Chapter 26 Physics: for Scientists & Engineers with Modern Physics, 4th edition Giancoli
ConcepTest Clicker Questions Chapter 26 Physics: for Scientists & Engineers with Modern Physics, 4th edition Giancoli 2008 Pearson Education, Inc. This work is protected by United States copyright laws
More informationDC Circuits. Circuits and Capacitance Worksheet. 10 Ω resistance. second? on the sodium is the same as on an electron, but positive.
Circuits and Capacitance Worksheet DC Circuits 1. A current of 1.30 A flows in a wire. How many electrons are flowing past any point in the wire per second? 2. What is the current in amperes if 1200 Na
More informationClosed loop of moving charges (electrons move  flow of negative charges; positive ions move  flow of positive charges. Nucleus not moving)
Unit 2: Electricity and Magnetism Lesson 3: Simple Circuits Electric circuits transfer energy. Electrical energy is converted into light, heat, sound, mechanical work, etc. The byproduct of any circuit
More informationDownloaded from
CHAPTER 12 ELECTRICITY Electricity is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena such
More information1) Two lightbulbs, one rated 30 W at 120 V and another rated 40 W at 120 V, are arranged in two different circuits.
1) Two lightbulbs, one rated 30 W at 120 V and another rated 40 W at 120 V, are arranged in two different circuits. a. The two bulbs are first connected in parallel to a 120 V source. i. Determine the
More informationDirect Current Circuits. February 18, 2014 Physics for Scientists & Engineers 2, Chapter 26 1
Direct Current Circuits February 18, 2014 Physics for Scientists & Engineers 2, Chapter 26 1 Kirchhoff s Junction Rule! The sum of the currents entering a junction must equal the sum of the currents leaving
More informationElectron Theory of Charge. Electricity. 1. Matter is made of atoms. Refers to the generation of or the possession of electric charge.
Electricity Refers to the generation of or the possession of electric charge. There are two kinds of electricity: 1. Static Electricity the electric charges are "still" or static 2. Current Electricity
More informationTest Review Electricity
Name: Date: 1. An operating television set draws 0.71 ampere of current when connected to a 120volt outlet. Calculate the time it takes the television to consume 3.0 10 5 joules of electric energy. [Show
More informationELECTRICITY UNIT REVIEW
ELECTRICITY UNIT REVIEW S1304: How does the Atomic Model help to explain static electricity? 1. Which best describes static electricity? a) charges that can be collected and held in one place b) charges
More informationElectricity. dronstudy.com
Electricity Electricity is a basic part of our nature and it is one of our most widely used forms of energy. We use electricity virtually every minute of every day for example in lighting, heating, refrigeration,
More information52 VOLTAGE, CURRENT, RESISTANCE, AND POWER
52 VOLTAGE, CURRENT, RESISTANCE, AND POWER 1. What is voltage, and what are its units? 2. What are some other possible terms for voltage? 3. Batteries create a potential difference. The potential/voltage
More informationPreliminary Course Physics Module 8.3 Electrical Energy in the Home Summative Test. Student Name:
Summative Test Student Name: Date: / / IMPORTANT FORMULAE I = Q/t V = I.R R S = R 1 + R 2 +.. 1/R P = 1/R 1 + 1/R 2 + P = V.I = I 2.R = V 2 /R Energy = V.I.t E = F/q Part A. Multiple Choice Questions 120.
More informationReview. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
Review Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. When more devices are added to a series circuit, the total circuit resistance: a.
More informationCalculate the total resistance of this combination. (3)
1 The circuit shows a combination of three resistors. 22 Ω 47 Ω 620 Ω Calculate the total resistance of this combination. Total resistance = (Total for Question = 3 marks) 2 (a) Sketch a graph to show
More informationChapter 4. Chapter 4
Chapter 4 Energy 1 n Energy, W, is the ability to do work and is measured in joules. One joule is the work done when a force of one newton is applied through a distance of one meter. The symbol for energy,
More informationCircuitsOhm's Law. 1. Which graph best represents the relationship between the electrical power and the current in a resistor that obeys Ohm s Law?
1. Which graph best represents the relationship between the electrical power and the current in a resistor that obeys Ohm s Law? 2. A potential drop of 50 volts is measured across a 250 ohm resistor.
More informationElectricity Test Review
Electricity Test Review Definitions; Series Circuit, Parallel Circuit, Equivalent Resistance, Fuse, Circuit Breaker, kilowatt hour, load, short circuit, dry cell, wet cell, fuel cells, solar cells, fossil
More informationChapter 25 Electric Currents and Resistance. Copyright 2009 Pearson Education, Inc.
Chapter 25 Electric Currents and Resistance Units of Chapter 25 The Electric Battery Electric Current Ohm s Law: Resistance and Resistors Resistivity Electric Power Units of Chapter 25 Power in Household
More informationCHAPTER ONE. 1.1 International System of Units and scientific notation : Basic Units: Quantity Basic unit Symbol as shown in table 1
CHAPTER ONE 1.1 International System of Units and scientific notation : 1.1.1 Basic Units: Quantity Basic unit Symbol as shown in table 1 Table 1 1.1.2 Some scientific notations : as shown in table 2 Table
More informationweek 6 chapter 31 Current and Resistance
week 6 chapter 31 Current and Resistance Which is the correct way to light the lightbulb with the battery? 4) all are correct 5) none are correct 1) 2) 3) Which is the correct way to light the lightbulb
More informationRECALL?? Electricity concepts in Grade 9. Sources of electrical energy Current Voltage Resistance Power Circuits : Series and Parallel
Unit 3C Circuits RECALL?? Electricity concepts in Grade 9. Sources of electrical energy Current Voltage Resistance Power Circuits : Series and Parallel 2 Types of Electricity Electrostatics Electricity
More informationAP Physics Electricity and Magnetism #3 Capacitors, Resistors, Ohm s Law, Electric Power
Name Period AP Physics Electricity and Magnetism #3 Capacitors, Resistors, Ohm s Law, Electric Power Dr. Campbell 1. The two plates of a capacitor hold +2500 µc and 2500 µc of charge, respectively, when
More informationUnit 3 BLM Answers UNIT 3 BLM 346
UNIT 3 BLM 346 Unit 3 BLM Answers BLM 33, Charge Transfer Diagrams 1. Positively charged objects should have more (+) than ( ). Negatively charged objects should have more ( ) than (+). 2. They must
More informationChapter 3. Chapter 3
Chapter 3 Review of V, I, and R Voltage is the amount of energy per charge available to move electrons from one point to another in a circuit and is measured in volts. Current is the rate of charge flow
More informationTopic 5.2 Heating Effect of Electric Currents
Topic 5.2 Heating Effect of Electric Currents Kari Eloranta 2017 Jyväskylän Lyseon lukio International Baccalaureate February 14, 2017 Topic 5.2 Heating Effect of Electric Currents In subtopic 5.2 we study
More informationCurrent Electricity.notebook. December 17, 2012
1 Circuit Diagrams and Assembly 1. Draw a circuit diagram containing a battery, a single throw switch, and a light. 2. Once the diagram has been checked by your teacher, assemble the circuit. Keep the
More informationElectric current is a flow of electrons in a conductor. The SI unit of electric current is ampere.
C h a p t e r at G l a n c e 4. Electric Current : Electric current is a flow of electrons in a conductor. The SI unit of electric current is ampere. Current = Charge time i.e, I = Q t The SI unit of charge
More informationInformation for Makeup exam is posted on the course website.
Information for Makeup exam is posted on the course website. Three resistors are connected to a 6V battery as shown. The internal resistance of the battery is negligible. What is the current through the
More informationRead Chapter 7; pages:
Forces Read Chapter 7; pages: 191221 Objectives:  Describe how electrical charges exert forces on each other; Compare the strengths of electric and gravitational forces; Distinguish between conductors
More informationResistivity and Temperature Coefficients (at 20 C)
Homework # 4 Resistivity and Temperature Coefficients (at 0 C) Substance Resistivity, Temperature ( m) Coefficient, (C )  Conductors Silver.59 x 00.006 Copper.6 x 00.006 Aluminum.65 x 00.0049 Tungsten
More informationNotes: Ohm s Law and Electric Power
Name: Date: / / 644 Intro Physics Notes: Ohm s Law and Electric Power Ohm s Law: Important Terms Term Symbol Units Definition 1. current I amps flow of electric charges through a conductor 2. voltage V
More informationScience Practice Exam. Chapters 5 and 14
Science Practice Exam Chapters 5 and 14 FORMULAS Science and Technology FORMULAS C: concentration m: quantity of solute v: quantity of solution V: potential difference R: resistance I: electric current
More informationElectricity Questions Part 2
Electricity Questions Part 2 35 Questions Name: Class: Date: Time: Marks: Comment s: Q. (a) The diagram shows the traces produced on an oscilloscope when it is connected across different electricity supplies.
More informationhttps://www.youtube.com/watch?v=yc2363miqs
https://www.youtube.com/watch?v=yc2363miqs SCIENCE 9 UNIT 3 ELECTRICITY Remember: In the last unit we learned that all matter is made up of atoms atoms have subatomic particles called, protons, neutrons
More informationElectrical Circuits. Winchester College Physics. makptb. c D. Common Time man. 3rd year Revision Test
Name... Set... Don.... manner~ man makptb Winchester College Physics 3rd year Revision Test Electrical Circuits Common Time 2011 Mark multiple choice answers with a cross (X) using the box below. I A B
More informationNow let s look at some devices that don t have a constant resistance.
Lab #3 Now let s look at some devices that don t have a constant resistance. This is the same circuit you built last time. But now, in place of the resistor first build the circuit with a light bulb, then
More information11. ELECTRIC CURRENT. Questions and Answers between the forces F e and F c. 3. Write the difference between potential difference and emf. A.
CLSS10 1. Explain how electron flow causes electric current with LorentzDrude theory of electrons?. Drude and Lorentz, proposed that conductors like metals contain a large number of free electrons while
More information8. Electric circuit: The closed path along which electric current flows is called an electric circuit.
GIST OF THE LESSON 1. Positive and negative charges: The charge acquired by a glass rod when rubbed with silk is called positive charge and the charge acquired by an ebonite rod when rubbed with wool is
More informationElectricity Final Unit Final Assessment
Electricity Final Unit Final Assessment Name k = 1/ (4pe 0 ) = 9.0 10 9 N m 2 C 2 mass of an electron = 9.11 1031 kg mass of a proton = 1.67 1027 kg G = 6.67 1011 N m 2 kg 2 C = 3 x10 8 m/s Show all
More informationElectromagnetism Checklist
Electromagnetism Checklist Elementary Charge and Conservation of Charge 4.1.1A Convert from elementary charge to charge in coulombs What is the charge in coulombs on an object with an elementary charge
More informationElectric Charge and Electric field
Electric Charge and Electric field ConcepTest 16.1a Electric Charge I Two charged balls are repelling each other as they hang from the ceiling. What can you say about their charges? 1) one is positive,
More information1. What is heating effect of current? What is its cause?
GRADE: X PHYSICS (ELECTRICITY) DOMESTIC ELECTRIC CIRCUITS: SERIES OR PARALLEL Disadvantages of series circuits for domestic wiring : In series circuit, if one electrical appliance stops working, due to
More informationChapter 3: Electric Current And DirectCurrent Circuits
Chapter 3: Electric Current And DirectCurrent Circuits 3.1 Electric Conduction 3.1.1 Describe the microscopic model of current Mechanism of Electric Conduction in Metals Before applying electric field
More informationCHARGE AND ELECTRIC CURRENT:
ELECTRICITY: CHARGE AND ELECTRIC CURRENT ELECTRIC CHARGE ELECTRIC CURRENT ELECTRIC CIRCUIT DEFINITION AND COMPONENTS EFFECTS OF ELECTRIC CURRENT TYPES OF CIRCUITS ELECTRIC QUANTITIES VOLTAGE CURRENT RESISTANCE
More informationChapter 25 Electric Currents and. Copyright 2009 Pearson Education, Inc.
Chapter 25 Electric Currents and Resistance 251 The Electric Battery Volta discovered that electricity could be created if dissimilar metals were connected by a conductive solution called an electrolyte.
More informationOhm s Law Book page Syllabus 2.10
Ohm s Law Book page 85 87 Syllabus 2.10 What s wrong with this circuit diagram? Task 2 Sketch a simple series circuit containing a cell and a bulb. On your circuit diagram, show an ammeter and voltmeter
More informationChapter 18. Direct Current Circuits
Chapter 18 Direct Current Circuits Sources of emf The source that maintains the current in a closed circuit is called a source of emf Any devices that increase the potential energy of charges circulating
More informationLESSON 5: ELECTRICITY II
LESSON 5: ELECTRICITY II The first two points are a review of the previous lesson 1.1.ELECTRIC CHARGE  Electric charge is a property of all objects and is responsible for electrical phenomena. All matter
More informationQuestion Bank. Electric Energy, Power and Household Circuits
Electric Energy, Power and Household Circuits 1. (a) What do you understand by the term electric work? (b) State the SI unit of electric work and define it. (c) Name two bigger units of electric work.
More informationEnergy and Energy Transformations
and Transformations Transformations Key Concepts What is the law of conservation of? How does friction affect transformations? How are different types of used? What do you think? Read the three statements
More informationThis week. 3/23/2017 Physics 214 Summer
This week Electrical Circuits Series or parallel that s the question. Current, Power and Energy Why does my laptop battery die? Transmission of power to your home Why do we have big transmission towers?
More informationThis week. 6/2/2015 Physics 214 Summer
This week Electrical Circuits Series or parallel that s the question. Current, Power and Energy Why does my laptop battery die? Transmission of power to your home Why do we have big transmission towers?
More informationLecture (07) Electric Current and Resistance By: Dr. Ahmed ElShafee Dr. Ahmed ElShafee, ACU : Spring 2015, Physics II
Lecture (07) Electric Current and Resistance By: Dr. Ahmed ElShafee ١ The glow of the thin wire filament of a light bulb is caused by the electric current passing through it. Electric energy is transformed
More information2000 February 25 Exam I Physics 106
February 5 Exam I Physics 6 ircle the letter of the single best answer. Each question is worth point Physical onstants: proton charge = e =.6 9 proton mass = m p =.67 7 kg electron mass = m e = 9. kg permittivity
More informationStatic Electricity. Electric Field. the net accumulation of electric charges on an object
Static Electricity the net accumulation of electric charges on an object Electric Field force exerted by an e  on anything that has an electric charge opposite charges attract like charges repel Static
More informationSt Roch s Secondary School Physics Department. National 5 Physics Electricity and Energy Class Questions
St Roch s Secondary School Physics Department National 5 Physics Electricity and Energy Class Questions Electricity Alternating and Direct Current Current, Charge and Time In this section you can use
More informationCurrent Electricity. ScienceLinks 9, Unit 4 SciencePower 9, Unit 3
Current Electricity ScienceLinks 9, Unit 4 SciencePower 9, Unit 3 Current Electricity The flow of negative charges (electrons) through conductors Watch the BrainPOPs: Electricity Current Electricity Activity:
More informationTemperature coefficient of resistivity
Temperature coefficient of resistivity ρ slope = α ρ = ρ o [ 1+ α(t To )] R = R o [1+ α(t T o )] T T 0 = reference temperature α = temperature coefficient of resistivity, units of (ºC) 1 For Ag, Cu, Au,
More informationNote on Posted Slides. Flow of Charge. Electricity/Water Analogy: Continuing the Analogy. Electric Current
Note on Posted Slides These are the slides that I intended to show in class on Tue. Mar. 18, 2014. They contain important ideas and questions from your reading. Due to time constraints, I was probably
More informationRelating Voltage, Current and Resistance
Relating Voltage, Current and Resistance Using Ohm s Law in a simple circuit. A Simple Circuit Consists of:! A voltage source often a battery! A load such as a bulb! Conductors arranged to complete a circuit
More informationPhysics for Scientists & Engineers 2
Review The resistance R of a device is given by Physics for Scientists & Engineers 2 Spring Semester 2005 Lecture 8 R =! L A ρ is resistivity of the material from which the device is constructed L is the
More informationELECTRICITY & CIRCUITS
ELECTRICITY & CIRCUITS Reason and justice tell me there s more love for humanity in electricity and steam than in chastity and vegetarianism. Anton Chekhov LIGHTNING, PART 2 Electricity is really just
More informationSTUDY GUIDE CHAPTER 5 ELECTRICITY AND MAGNETISM 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE
Name Date STUDY GUIDE CHAPTER 5 ELECTRICITY AND MAGNETISM 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE Scientists now know that an atom is composed of even smaller particles of matter:
More informationPhysics 7B1 (A/B) Professor Cebra. Winter 2010 Lecture 2. Simple Circuits. Slide 1 of 20
Physics 7B1 (A/B) Professor Cebra Winter 2010 Lecture 2 Simple Circuits Slide 1 of 20 Conservation of Energy Density In the First lecture, we started with energy conservation. We divided by volume (making
More informationENGI 1040: ELECTRIC CIRCUITS Winter Part I Basic Circuits
1. Electric Charge ENGI 1040: ELECTRIC CIRCUITS Winter 2018 Part I Basic Circuits atom elementary unit of a material which contains the properties of that material can be modeled as negatively charged
More informationTrade of Electrician. Power and Energy
Trade of Electrician Standards Based Apprenticeship Power and Energy Phase 2 Module No. 2.1 Unit No. 2.1.6 COURSE NOTES SOLAS Electrical Course Notes  Unit 2.1.6 Created by Gerry Ryan  Galway TC Revision
More informationExam 1PHYS 202S12
ame: Exam 1PHYS 202S12 Multiple Choice Identify the choice that best completes the statement or answers the question 1 Which of these statements is true about charging by induction? a it can only occur
More informationPhysicsAndMathsTutor.com
Electricity May 02 1. The graphs show the variation with potential difference V of the current I for three circuit elements. PhysicsAndMathsTutor.com When the four lamps are connected as shown in diagram
More informationRevision checklist SP10. SP10 Electricity and Circuits. SP10a Electric circuits. SP10b Current and potential difference
Electricity and Circuits a Electric circuits Describe the basic structure of an atom (positions, relative masses and relative charges of protons, neutrons and electrons). Recognise the circuit symbols
More informationElectric Charge. Electric Charge ( q ) unbalanced charges positive and negative charges. n Units Coulombs (C)
Electric Charge Electric Charge ( q ) unbalanced charges positive and negative charges n Units Coulombs (C) Electric Charge How do objects become charged? Types of materials Conductors materials in which
More informationPhysics Circuits: Series
FACULTY OF EDUCATION Department of Curriculum and Pedagogy Physics Circuits: Series Science and Mathematics Education Research Group Supported by UBC Teaching and Learning Enhancement Fund 20122013 Series
More informationp I = Q (charge) t (time)
ClXBBElfT I M C T R I C I T Y 308 *Demonstrate and explain how static and current electricity are alike and different Vocabulary: discharge, circuit, circuit diagram, switch, dry cell, battery, load,
More informationElectric Power * OpenStax HS Physics. : By the end of this section, you will be able to:
OpenStaxCNX module: m54446 1 Electric Power * OpenStax HS Physics This work is produced by OpenStaxCNX and licensed under the Creative Commons Attribution License 4.0 1 : By the end of this section,
More informationName... Class... Date...
The power of lamps Specification references: P2.4.1 Power P2.4.2 Energy transfers in everyday appliances (part) MS 1a, 2a, 3b, 3c, 3d WS 1.2, 2.6, 3.1, 3.3 Aims In this practical, you will observe the
More informationWhat is a Circuit? We know that electricity is the flow of electrons. If the electrons cannot move there is now electricity.
Electrical Circuits This guide covers the following: What is a circuit? Circuit Symbols Series and Parallel Circuits Electrical Charge Voltage Current Current and Voltage in Series and Parallel circuits
More informationLab 8 Simple Electric Circuits
Lab 8 Simple Electric Circuits INTRODUCTION When we talk about the current in a river, we are referring to the flow of water. Similarly, when we refer to the electric current in a circuit, we are talking
More information