RESISTANCE AND NETWORKS


 Bryce Campbell
 4 years ago
 Views:
Transcription
1 PURPOSE The purpose of this laboratory is to learn to construct simple circuits; and, to become familiar with the use of power supplies and the digital multimeter. to experimentally find the equivalent resistance of parallel and series combinations of resistors; to experimentally confirm currentvoltage, branchloop equations in simple circuits; THEORY Electrical current is a measure of the net charge flowing across a fixed cross sectional area of conductor per unit time. In the MKS system, the current is measured in Coulomb/second, or Amperes. The amount of current through a conductor is a function of the applied electric field and of the geometry and physical properties of the material. If, as in many cases of interest, the current is directly proportional to the applied potential difference, the conductor is said to be linear or ohmic. The linear relation between the potential difference and the current is called Ohm's law. This relation takes the form I = σ V = 1 V R where σ, the constant of proportionality, is a characteristic parameter of the conductor called the conductivity. R, the resistance, is the inverse of the conductance, σ 1. The unit of resistance is the Ohm. Of course, if two ends of a currentcarrying conductor are to be kept at a fixed potential difference, work must be spent somewhere else in a circuit to bring the charges that have gone to a lower potential level back up to a higher level. The situation is similar to the following mechanical analogue. A collection of blocks is dragged up to a higher level by a mechanical contraption (for example, a conveyor belt) and allowed to fall after reaching the top. Once the blocks get back to the lower level, they are caught up again by the device, so that the cycle can repeat itself. The work done by the conveyor belt to move a block up to the higher level is the analogue of the "electromotive force" (emf) of a battery. (Note however that, strictly speaking, emf is not work, but work per unit charge.) If the conveyor belt is an ideal machine (no friction, etc.) the work due in bringing each block up will equal the potential energy difference between the high and low levels. If as is usually the case, some energy is lost to friction, the mechanical energy balance will read (Mechanical energy to bring each block up) = (Potential energy difference) + (Energy lost to internal friction) XII1
2 The electrical analogue (per unit charge) of this energy balance is ε = V + Ir where r is the internal resistance of the generator itself (not R). In this experiment, it is unlikely that the accuracy will be sufficient to notice the effects associated with the internal resistance r. In practice then, r is frequently assumed to be zero. One important observation to be made is that if a substantial amount of current is drawn out of the power supply, the measurement of potential difference between the terminals of the power supply should be made under load conditions, i.e., with charges flowing through your circuit. This will not be the case in these experiments. For a series combination of resistors, the same current flows through each resistor. The equivalent resistance for two resistors in series is R eq = R 1 + R 2 For a parallel combination of resistors, there is equal voltage across each resistor. The equivalent resistance for two resistors in parallel is R = + eq R R or 1 2 R R2 R 1 R eq = R1 + 2 with I = I + I 0 i.e., I = 0 at a branch point. 1 2 = n n XII2
3 EXPERIMENTAL PROCEDURE A. Measurement of resistance with an ohmmeter Arrange the three resistors by their color codes (nominal values) so that R 1 < R 2 < R 3. Evaluate the resistance (R) for each resistor using the color code, record the colors and their corresponding values. Measure the resistance of each of the three resistors with the ohmmeter. Compare the measured and the nominal values of each resistor and calculate the percent difference. The percent difference should be equal to or less than the coded percent tolerance. The values to be used in the calculations that follow should be those obtained by direct measurement with the multimeter. B. Currentvoltage relation for a resistor To prevent damage to instrumentation, be sure the multimeter measuring voltage is selected to measure voltage and the multimeter measuring current is selected to measure current. Construct the following simple circuit, setting the power supply for V PS 5 volts. Here two multimeters are shown. XII3
4 NOTES: If you are using a single multimeter, you must substitute it in each section of the circuit to measure voltage and current. For either case, it is important to take the presence of the multimeter into account. Measure and record the power supply voltage, V PS, the total current (I T ) and voltage drop (V R ) across R 1 using the multimeter first as an ammeter (I) and then as a voltmeter (V). Compare and discuss the values of resistance measured with the ohmmeter and calculated by Ohm's law. Mention possible sources of error. C. Series Circuit Construct the following series circuit: With the voltage source disconnected, measure the equivalent resistance using the ohmmeter function of the multimeter. With the measured values of the resistors recorded in Section A, calculate the expected value of resistance with the series equation. Using the multimeter, measure and record V 1, V 2, V T, I T. Calculate the indicated values of resistance using Ohm's law. Compare and discuss the values of R 1,calc and R 2,calc with their actual values measured with the ohmmeter in Section A. Also compare R T,calc with that calculated by series equation (R S ) and measured directly with ohmmeter (R eq ). XII4
5 D. Parallel Circuit Construct the following parallel circuit: With the voltage source disconnected, measure the equivalent resistance using the ohmmeter function of the multimeter. With the measured values of the resistors recorded in Section A, calculate the expected value of resistance with the parallel equation. Using the multimeter, measure and record the V T, I 1, I 2, I T. Calculate the indicated values of resistance using Ohm's law. Compare and discuss the values of R 1,calc and R 2,calc with their actual values measured with the ohmmeter in Section A. Also compare R T,calc with that calculated by parallel equation (R P ) and measured directly with ohmmeter (R eq ). E. Series  Parallel Combination Leaving R 1 and R 2 in parallel, add R 3 in series as shown, thus constructing a series  parallel circuit. With the voltage source disconnected, measure the equivalent resistance with the ohmmeter. With the measured values of the resistors recorded in Section A, calculate the expected value of resistance with the seriesparallel equation. XII5
6 Measure and record: V 1 = V 2, V 3, V T, I 1, I 2, I 3 = I T. Calculate the indicated values of resistance using Ohm's law. Compare and discuss the values of R 1,calc, R 2,calc and R 3,calc with their actual values measured with the ohmmeter in Section A. Also compare R T,calc with that calculated by seriesparallel equation (R SP ) and measured directly with ohmmeter (R eq ). XII6
7 NAME Sec/Group Date TABLE 1 RESISTOR DATA R 1 R 2 R 3 Color Code % Tolerance Nominal val Meas value % difference In tolerance? SINGLE RESISTOR Measured values Compared with I T measured values: V T R 1,calc % difference SERIES CIRCUIT R eq measured with ohmmeter R eq calculated by series eqn. Measured values Compared with I T measured values: V T R T,calc % difference V 1 R 1,calc % difference V 2 R 2,calc % difference PARALLEL CIRCUIT R eq measured with ohmmeter R eq calculated by parallel eqn. Measured values Compared with V T measured values: I T R T,calc % difference I 1 R 1,calc % difference I 2 R 2,calc % difference XII7
8 SERIES  PARALLEL CIRCUIT R eq measured with ohmmeter R eq calculated by seriesparallel eqn. Measured values Compared with I T (=I 3 ) measured values: V T R T,calc % difference V 1 (=V 2 ) I 1 R 1,calc % difference I 2 R 2,calc % difference V 3 R 3,calc % difference XII8
EE301 RESISTANCE AND OHM S LAW
Learning Objectives a. Describe the concept of resistance b. Use Ohm s law to calculate current, voltage, and resistance values in a circuit c. Discuss the difference between an open circuit and a short
More informationPhysics 1214 Chapter 19: Current, Resistance, and DirectCurrent Circuits
Physics 1214 Chapter 19: Current, Resistance, and DirectCurrent Circuits 1 Current current: (also called electric current) is an motion of charge from one region of a conductor to another. Current When
More informationPHYSICS 171. Experiment 3. Kirchhoff's Laws. Three resistors (Nominally: 1 Kilohm, 2 Kilohm, 3 Kilohm).
PHYSICS 171 Experiment 3 Kirchhoff's Laws Equipment: Supplies: Digital Multimeter, Power Supply (020 V.). Three resistors (Nominally: 1 Kilohm, 2 Kilohm, 3 Kilohm). A. Kirchhoff's Loop Law Suppose that
More informationSIMPLE D.C. CIRCUITS AND MEASUREMENTS Background
SIMPLE D.C. CICUITS AND MEASUEMENTSBackground This unit will discuss simple D.C. (direct current current in only one direction) circuits: The elements in them, the simple arrangements of these elements,
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 informationEXPERIMENT 12 OHM S LAW
EXPERIMENT 12 OHM S LAW INTRODUCTION: We will study electricity as a flow of electric charge, sometimes making analogies to the flow of water through a pipe. In order for electric charge to flow a complete
More informationELECTRIC CIRCUITS. Checklist. Exam Questions
ELECTRIC CIRCUITS Checklist Make sure you can. State Ohm's law in words. Determine relationship between current, potential difference and resistance at constant temperature using a simple circuit Draw,
More informationScience Olympiad Circuit Lab
Science Olympiad Circuit Lab Key Concepts Circuit Lab Overview Circuit Elements & Tools Basic Relationships (I, V, R, P) Resistor Network Configurations (Series & Parallel) Kirchhoff s Laws Examples Glossary
More informationFlow Rate is the NET amount of water passing through a surface per unit time
Electric Current An Analogy Water Flow in a Pipe H 2 0 gallons/minute Flow Rate is the NET amount of water passing through a surface per unit time Individual molecules are bouncing around with speeds of
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 informationCHAPTER 1 ELECTRICITY
CHAPTER 1 ELECTRICITY Electric Current: The amount of charge flowing through a particular area in unit time. In other words, it is the rate of flow of electric charges. Electric Circuit: Electric circuit
More informationChapter 2. Engr228 Circuit Analysis. Dr Curtis Nelson
Chapter 2 Engr228 Circuit Analysis Dr Curtis Nelson Chapter 2 Objectives Understand symbols and behavior of the following circuit elements: Independent voltage and current sources; Dependent voltage and
More informationReview of Ohm's Law: The potential drop across a resistor is given by Ohm's Law: V= IR where I is the current and R is the resistance.
DC Circuits Objectives The objectives of this lab are: 1) to construct an Ohmmeter (a device that measures resistance) using our knowledge of Ohm's Law. 2) to determine an unknown resistance using our
More informationresistance in the circuit. When voltage and current values are known, apply Ohm s law to determine circuit resistance. R = E/I ( )
DC Fundamentals Ohm s Law Exercise 1: Ohm s Law Circuit Resistance EXERCISE OBJECTIVE When you have completed this exercise, you will be able to determine resistance by using Ohm s law. You will verify
More informationLab 4 Series and Parallel Resistors
Lab 4 Series and Parallel Resistors What You Need To Know: The Physics Last week you examined how the current and voltage of a resistor are related. This week you are going to examine how the current and
More informationSirindhorn International Institute of Technology Thammasat University at Rangsit
Sirindhorn International Institute of Technology Thammasat University at Rangsit School of Information, Computer and Communication Technology COURSE : ECS 304 Basic Electrical Engineering Lab INSTRUCTOR
More informationChapter 16. Current and Drift Speed. Electric Current, cont. Current and Drift Speed, cont. Current and Drift Speed, final
Chapter 6 Current, esistance, and Direct Current Circuits Electric Current Whenever electric charges of like signs move, an electric current is said to exist The current is the rate at which the charge
More informationAP Physics C  E & M
Slide 1 / 27 Slide 2 / 27 AP Physics C  E & M Current, Resistance & Electromotive Force 20151205 www.njctl.org Slide 3 / 27 Electric Current Electric Current is defined as the movement of charge from
More informationElectric Currents. Resistors (Chapters 2728)
Electric Currents. Resistors (Chapters 2728) Electric current I Resistance R and resistors Relation between current and resistance: Ohm s Law Resistivity ρ Energy dissipated by current. Electric power
More informationPhysics 102 Lab 4: Circuit Algebra and Effective Resistance Dr. Timothy C. Black Spring, 2005
Physics 02 Lab 4: Circuit Algebra and Effective Resistance Dr. Timothy C. Black Spring, 2005 Theoretical Discussion The Junction Rule: Since charge is conserved, charge is neither created or destroyed
More informationLecture Outline Chapter 21. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.
Lecture Outline Chapter 21 Physics, 4 th Edition James S. Walker Chapter 21 Electric Current and Direct Current Circuits Units of Chapter 21 Electric Current Resistance and Ohm s Law Energy and Power
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 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 informationChapter 25 Current Resistance, and Electromotive Force
Chapter 25 Current Resistance, and Electromotive Force 1 Current In previous chapters we investigated the properties of charges at rest. In this chapter we want to investigate the properties of charges
More informationChapter 3: Electric Current and DirectCurrent Circuit
Chapter 3: Electric Current and DirectCurrent Circuit n this chapter, we are going to discuss both the microscopic aspect and macroscopic aspect of electric current. Directcurrent is current that flows
More informationXII PHYSICS [CURRENT ELECTRICITY] CHAPTER NO. 13 LECTURER PHYSICS, AKHSS, K.
XII PHYSICS LECTURER PHYSICS, AKHSS, K affan_414@live.com https://promotephysics.wordpress.com [CURRENT ELECTRICITY] CHAPTER NO. 13 CURRENT Strength of current in a conductor is defined as, Number of coulombs
More informationAP Physics C. Electric Circuits III.C
AP Physics C Electric Circuits III.C III.C.1 Current, Resistance and Power The direction of conventional current Suppose the crosssectional area of the conductor changes. If a conductor has no current,
More informationResistance, Ohm s Law and Kirchoff s Laws
Universiti Teknologi MR Fakulti Sains Gunaan Resistance, Ohm s Law and Kirchoff s Laws PHY631: Physical Science ctivity Name: HP: Lab#: Intro Objectives The goal of today s activity is to physically investigate
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 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 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 informationChapter 25 Current, Resistance, and Electromotive Force
Chapter 25 Current, Resistance, and Electromotive Force Lecture by Dr. Hebin Li Goals for Chapter 25 To understand current and how charges move in a conductor To understand resistivity and conductivity
More informationResistance Learning Outcomes
Resistance Learning Outcomes Define resistance and give its unit. Solve problems about resistance. State Ohm s Law. HL: Derive the formulas for resistors in series and parallel. Solve problems about resistors
More informationChapter 21 Electric Current and Direct Current Circuits
Chapter 21 Electric Current and Direct Current Circuits 1 Overview of Chapter 21 Electric Current and Resistance Energy and Power in Electric Circuits Resistors in Series and Parallel Kirchhoff s Rules
More informationChapter 20 Electric Circuits
Chapter 0 Electric Circuits Chevy olt  Electric vehicle of the future Goals for Chapter 9 To understand the concept of current. To study resistance and Ohm s Law. To observe examples of electromotive
More information1 Written and composed by: Prof. Muhammad Ali Malik (M. Phil. Physics), Govt. Degree College, Naushera
CURRENT ELECTRICITY Q # 1. What do you know about electric current? Ans. Electric Current The amount of electric charge that flows through a cross section of a conductor per unit time is known as electric
More informationQ2 How many coulombs of charge leave the power supply during each second?
Part I  Circuit Elements in Series In Figure 1 at the right circuit elements #1, #2, #3 (in this case light bulbs) are said to be connected "IN SERIES". That is, they are connected in a series one right
More informationET 162 Circuit Analysis. Current and Voltage. Electrical and Telecommunication Engineering Technology. Professor Jang
ET 162 Circuit Analysis Current and Voltage Electrical and Telecommunication Engineering Technology Professor Jang Acknowledgement I want to express my gratitude to Prentice Hall giving me the permission
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 informationResistance Learning Outcomes. Resistance Learning Outcomes. Resistance
Resistance Learning Outcomes Define resistance and give its unit. Solve problems about resistance. State Ohm s Law. HL: Derive the formulas for resistors in series and parallel. Solve problems about resistors
More informationExperiment 4: Resistances in Circuits
Name: Partners: Date: Experiment 4: Resistances in Circuits EQUIPMENT NEEDED: Circuits Experiment Board Multimeter Resistors Purpose The purpose of this lab is to begin experimenting with the variables
More informationChapter 7 DirectCurrent Circuits
Chapter 7 DirectCurrent Circuits 7. Introduction... 7. Electromotive Force... 7.3 Resistors in Series and in Parallel... 4 7.4 Kirchhoff s Circuit Rules... 6 7.5 VoltageCurrent Measurements... 8 7.6
More informationThe Digital Multimeter (DMM)
The Digital Multimeter (DMM) Since Physics 152 covers electricity and magnetism, the analysis of both DC and AC circuits is required. In the lab, you will need to measure resistance, potential (voltage),
More informationINTRODUCTION TO ELECTRONICS
INTRODUCTION TO ELECTRONICS Basic Quantities Voltage (symbol V) is the measure of electrical potential difference. It is measured in units of Volts, abbreviated V. The example below shows several ways
More informationAP Physics C  E & M
AP Physics C  E & M Current and Circuits 20170712 www.njctl.org Electric Current Resistance and Resistivity Electromotive Force (EMF) Energy and Power Resistors in Series and in Parallel Kirchoff's
More informationElectric Currents and Circuits
Nicholas J. Giordano www.cengage.com/physics/giordano Chapter 19 Electric Currents and Circuits Marilyn Akins, PhD Broome Community College Electric Circuits The motion of charges leads to the idea of
More informationIntroductory Circuit Analysis
Introductory Circuit Analysis CHAPTER 6 Parallel dc Circuits OBJECTIVES Become familiar with the characteristics of a parallel network and how to solve for the voltage, current, and power to each element.
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 informationChapter 28. Direct Current Circuits
Chapter 28 Direct Current Circuits Circuit Analysis Simple electric circuits may contain batteries, resistors, and capacitors in various combinations. For some circuits, analysis may consist of combining
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 informationA Review of Circuitry
1 A Review of Circuitry There is an attractive force between a positive and a negative charge. In order to separate these charges, a force at least equal to the attractive force must be applied to one
More informationTOPIC 4 STATIC ELECTRICITY
IGCSE Physics 0625 notes Topic 4: Static Electricity 1 TOPIC 4 STATIC ELECTRICITY ELECTRICITY: Electricity is the flow of electrical charges or power. The charges could be in the form of electrons or ions.
More informationElectric charge is conserved the arithmetic sum of the total charge cannot change in any interaction.
Electrostatics Electric charge is conserved the arithmetic sum of the total charge cannot change in any interaction. Electric Charge in the Atom Atom: Nucleus (small, massive, positive charge) Electron
More informationElectrical MachinesI Prof. D. Kastha Department of Electrical Engineering Indian Institute of Technology, Kharagpur
Electrical MachinesI Prof. D. Kastha Department of Electrical Engineering Indian Institute of Technology, Kharagpur Lecture  20 Potential and Current Transformers (Refer Slide Time: 00:37) So far we
More informationCLASS X ELECTRICITY
Conductor Insulator: Materia Materials through which electric current cannot pass are called insulators. Electric Circuit: A continuous a CLASS X ELECTRICITY als through which electric current can pass
More informationmeas (1) calc calc I meas 100% (2) Diff I meas
Lab Experiment No. Ohm s Law I. Introduction In this lab exercise, you will learn how to connect the to network elements, how to generate a VI plot, the verification of Ohm s law, and the calculation of
More informationNORTHERN ILLINOIS UNIVERSITY PHYSICS DEPARTMENT. Physics 211 E&M and Quantum Physics Spring Lab #4: Electronic Circuits I
NORTHERN ILLINOIS UNIVERSITY PHYSICS DEPARTMENT Physics 211 E&M and Quantum Physics Spring 2018 Lab #4: Electronic Circuits I Lab Writeup Due: Mon/Wed/Thu/Fri, Feb. 12/14/15/16, 2018 Background The concepts
More informationNotes on Electricity (Circuits)
A circuit is defined to be a collection of energygivers (batteries) and energytakers (resistors, light bulbs, radios, etc.) that form a closed path (or complete path) through which electrical current
More informationPHYSICS FORM 5 ELECTRICAL QUANTITES
QUANTITY SYMBOL UNIT SYMBOL Current I Amperes A Voltage (P.D.) V Volts V Resistance R Ohm Ω Charge (electric) Q Coulomb C Power P Watt W Energy E Joule J Time T seconds s Quantity of a Charge, Q Q = It
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 informationMeasurement of Electrical Resistance and Ohm s Law
Measurement of Electrical Resistance and Ohm s Law Objectives In this experiment, measurements of the voltage across a wire coil and the current in the wire coil will be used to accomplish the following
More informationUNIT II CURRENT ELECTRICITY
UNIT II CUENT ELECTICITY Weightage : 07 Marks Electric current; flow of electric charges in a metllic conductor, drift velocity, mobility and their relation with electric current. Ohm s law electrical
More informationTrade of Electrician. Resistance Network Measurement
Trade of Electrician Standards Based Apprenticeship Resistance Network Measurement Phase 2 Module No. 2.1 Unit No. 2.1.5 COURSE NOTES Created by Gerry Ryan  Galway TC Revision 1. April 2000 by Gerry Ryan
More informationExperiment Aim: Students will describe the magnitude of resistance and define the EMF (electromotive force) of a cell.
Experiment I: Electromotive force and internal resistance Experiment Aim: Students will describe the magnitude of resistance and define the EMF (electromotive force) of a cell. Experimental tools and materials:
More informationLABORATORY 4 ELECTRIC CIRCUITS I. Objectives
LABORATORY 4 ELECTRIC CIRCUITS I Objectives to be able to discuss potential difference and current in a circuit in terms of electric field, work per unit charge and motion of charges to understand that
More informationELECTRIC CURRENTS D R M A R T A S T A S I A K D E P A R T M E N T O F C Y T O B I O L O G Y A N D P R O T E O M I C S
ELECTRIC CURRENTS D R M A R T A S T A S I A K D E P A R T M E N T O F C Y T O B I O L O G Y A N D P R O T E O M I C S lecture based on 2016 Pearson Education, Ltd. The Electric Battery Electric Current
More informationFigure 1: Capacitor circuit
Capacitors INTRODUCTION The basic function of a capacitor 1 is to store charge and thereby electrical energy. This energy can be retrieved at a later time for a variety of uses. Often, multiple capacitors
More informationElectricity Review completed.notebook. June 13, 2013
Which particle in an atom has no electric charge associated with it? a. proton c. neutron b. electron d. nucleus Jun 12 9:28 PM The electrons in a metal sphere can be made to move by touching it with a
More informationChapter 26 & 27. Electric Current and Direct Current Circuits
Chapter 26 & 27 Electric Current and Direct Current Circuits Electric Current and Direct Current Circuits Current and Motion of Charges Resistance and Ohm s Law Energy in Electric Circuits Combination
More informationTactics Box 23.1 Using Kirchhoff's Loop Law
PH203 Chapter 23 solutions Tactics Box 231 Using Kirchhoff's Loop Law Description: Knight/Jones/Field Tactics Box 231 Using Kirchhoff s loop law is illustrated Learning Goal: To practice Tactics Box 231
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 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 informationM. C. Escher: Waterfall. 18/9/2015 [tsl425 1/29]
M. C. Escher: Waterfall 18/9/2015 [tsl425 1/29] Direct Current Circuit Consider a wire with resistance R = ρl/a connected to a battery. Resistor rule: In the direction of I across a resistor with resistance
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 informationLook over Chapter 26 sections 17 Examples 3, 7. Look over Chapter 18 sections 15, 8 over examples 1, 2, 5, 8, 9,
Look over Chapter 26 sections 17 Examples 3, 7 Look over Chapter 18 sections 15, 8 over examples 1, 2, 5, 8, 9, 1)How to find a current in a wire. 2)What the Current Density and Draft Speed are. 3)What
More informationApplied Natural Sciences
Het basisvak Toegepaste Natuurwetenschappen http://www.phys.tue.nl/nfcmr/natuur/collegenatuur.html Applied Natural Sciences Leo Pel e mail: 3nab0@tue.nl http://tiny.cc/3nab0 Bijles Email: p.j.neuraij@tue.nl
More informationCURRENT ELECTRICITY CHAPTER 13 CURRENT ELECTRICITY Qs. Define Charge and Current. CHARGE Definition Flow of electron is known as Charge. It is denoted by Q. Unit Its unit is Coulomb. 1 Coulomb = 10(6)
More informationDirect Current (DC) Circuits
Direct Current (DC) Circuits NOTE: There are short answer analysis questions in the Participation section the informal lab report. emember to include these answers in your lab notebook as they will be
More informationSTATEWIDE CAREER/TECHNICAL EDUCATION COURSE ARTICULATION REVIEW MINUTES
STATEWIDE CAREER/TECHNICAL EDUCATION COURSE ARTICULATION REVIEW MINUTES Articulation Agreement Identifier: _ELT 107/ELT 108 (20111) PlanofInstruction version number (e.g.; INT 100 (20071)). Identifier
More informationSPS Presents: A Cosmic Lunch!
SPS Presents: A Cosmic Lunch! Who: Dr. Brown will be speaking about Evolution of the Elements: from Periodic table to Standard Model and Beyond! When: October 7 th at am Where: CP 79 (by the front office)
More informationLab #6 Ohm s Law. Please type your lab report for Lab #6 and subsequent labs.
Dr. Day, Fall 2004, Rev. 06/22/10 HEFW PH 262 Page 1 of 4 Lab #6 Ohm s Law Please type your lab report for Lab #6 and subsequent labs. Objectives: When you have completed this lab exercise you should be
More information5. ELECTRIC CURRENTS
5. ELECTRIC CURRENTS TOPIC OUTLINE Section Recommended Time Giancoli Section 5.1 Potential Difference, Current, Resistance 5.2 Electric Circuits 3h 19.1, 19.2 6.2 Electric Field and Force 6.3 Magnetic
More informationElectricity & Magnetism
Electricity & Magnetism D.C. Circuits Marline Kurishingal Note : This chapter includes only D.C. In AS syllabus A.C is not included. Recap... Electrical Circuit Symbols : Draw and interpret circuit diagrams
More informationPH 2222C Fall Circuits. Lectures Chapter 27 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition)
PH 2222C Fall 2012 Circuits Lectures 1112 Chapter 27 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition) 1 Chapter 27 Circuits In this chapter we will cover the following topics: Electromotive
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 informationName Date Time to Complete. NOTE: The multimeter s 10 AMP range, instead of the 300 ma range, should be used for all current measurements.
Name Date Time to Complete h m Partner Course/ Section / Grade Complex Circuits In this laboratory you will continue your exploration of dc electric circuits with a steady current. The circuits will be
More informationElectrical Engineering Technology
Electrical Engineering Technology 1 ECET 17700  DAQ & Control Systems Lecture # 9 Loading, Thévenin Model & Norton Model Professors Robert Herrick & J. Michael Jacob Module 1 Circuit Loading Lecture 9
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 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 informationCurrent and Resistance. February 12, 2014 Physics for Scientists & Engineers 2, Chapter 25 1
Current and Resistance February 12, 2014 Physics for Scientists & Engineers 2, Chapter 25 1 Helproom hours! Strosacker learning center, BPS 1248! Mo: 10am noon, 1pm 9pm! Tue: noon 6pm! We: noon 2pm! Th:
More informationElectromotive Force. The electromotive force (emf), ε, of a battery is the maximum possible voltage that the battery can provide between its terminals
Direct Current When the current in a circuit has a constant magnitude and direction, the current is called direct current Because the potential difference between the terminals of a battery is constant,
More informationSection 1 Electric Charge and Force
CHAPTER OUTLINE Section 1 Electric Charge and Force Key Idea questions > What are the different kinds of electric charge? > How do materials become charged when rubbed together? > What force is responsible
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 informationand in a simple circuit Part 2
Current, Resistance, and Voltage in a simple circuit Part 2 Electric Current Whenever electric charges of like signs move, an electric current is said to exist. Look at the charges flowing perpendicularly
More informationPOLYTECHNIC UNIVERSITY Electrical Engineering Department. EE SOPHOMORE LABORATORY Experiment 2 DC circuits and network theorems
POLYTECHNIC UNIVERSITY Electrical Engineering Department EE SOPHOMORE LABORATORY Experiment 2 DC circuits and network theorems Modified for Physics 18, Brooklyn College I. Overview of Experiment In this
More informationANNOUNCEMENT ANNOUNCEMENT
ANNOUNCEMENT Exam : Tuesday September 25, 208, 8 PM  0 PM Location: Elliott Hall of Music (see seating chart) Covers all readings, lectures, homework from Chapters 2 through 23 Multiple choice (58 questions)
More informationChapter 25. Electromotive Force. PowerPoint Lectures for University Physics, Twelfth Edition Hugh D. Young and Roger A. Freedman
Chapter 25 Current, Resistance, and Electromotive Force PowerPoint Lectures for University Physics, Twelfth Edition Hugh D. Young and Roger A. Freedman Lectures by James Pazun Main points (I, R, emf) 1.
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 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 information