ELEC 103. Objectives


 Hubert Norman
 6 years ago
 Views:
Transcription
1 ELEC 103 Voltage, Current, and Resistance Objectives Define voltage and discuss its characteristics Define current and discuss its characteristics Define resistance and discuss its characteristics Identify the rated, minimum, and maximum resistance value using the resistor color code 23 July 2005 ELEC Andrew H. Andersen 1
2 The Bohr Model of an Atom 23 July 2005 ELEC Categories of Materials Conductors readily permit current flow, due to a large number of free electrons in the material Conductors are characterized by 1, 2, or 3 valence electrons in their atomic structure Semiconductors have 4 valence electrons Insulators have few free electrons, and tend not to permit current to flow through them 23 July 2005 ELEC Andrew H. Andersen 2
3 The Simplest Atoms, Hydrogen And Helium. 23 July 2005 ELEC Attraction & Repulsion of Electrical Charges. Charge (Q) has the Coulomb (C) as the unit of measurement Current is charge in motion Any body may have one of three types of charge Positive Charge Negative Charge No Charge 23 July 2005 ELEC Andrew H. Andersen 3
4 Current Electron Current Flow is the movement of free electrons from negative terminal of the source to positive terminal We may also define Conventional Current Flow as the flow of positive free charges from positive terminal of the source to negative terminal Both are called electrical current (I) which has the Ampere (A) as the unit of measurement By definition: electrical current is the rate of flow of charge Q C I = A = t s 23 July 2005 ELEC Ampere: The Unit of Current One ampere of current is flowing when one coulomb of charge passes a given crosssectional area in one second 23 July 2005 ELEC Andrew H. Andersen 4
5 Voltage The unit of measurement for voltage is the volt (V) It is the source of electrical energy in a circuit By definition: One volt is the potential difference (voltage) between two points when one joule of energy is used to move one coulomb of charge from one point to the other Schematic Symbol for the DC Voltage Source Anode Cathode 23 July 2005 ELEC Batteries A battery is a voltage source that converts chemical energy into electrical energy The way cells are connected, and the type of cells, determines the voltage and capacity of a battery 23 July 2005 ELEC Andrew H. Andersen 5
6 Other Voltage Sources Solar Cells convert light energy into electrical energy Generators convert mechanical energy into electrical energy Electronic power supplies do not produce electrical energy, but they convert the ac voltage from an outlet into a constant dc voltage for use in our circuits 23 July 2005 ELEC Resistance The property of a material that restricts the flow of electrons is called resistance (R) By definition: Resistance is the opposition to current Where there is current through any material that has resistance, heat is produced by the collisions of electrons and atoms 23 July 2005 ELEC Andrew H. Andersen 6
7 Ohm: The Unit of Resistance By definition: One ohm of resistance exists if there is one ampere of current in a material when one volt is applied across the material The unit of measurement for resistance is the ohm (Ω) Schematic Symbol for a Resistor 23 July 2005 ELEC Resistors Resistors are used to limit current or divide voltage, and in some cases, generate heat Common resistors are carboncomposition, carbon film, metal film, and wirewound surface mount resistors are available as small resistor chips wirewound resistors are used where high power ratings are required 23 July 2005 ELEC Andrew H. Andersen 7
8 Common Fixed Resistors 23 July 2005 ELEC Colorcode Bands on a Resistor This coding is used for 5%, 10%, and 20% tolerance resistors The first three bands are used to denote the rated value The fourth denotes how much the device may vary from the rated value 1 st band is the first digit of the resistance value 2 nd band is the second digit of the resistance value 3 rd band is the multiplier (number of zeros) 4 th band indicates the tolerance 23 July 2005 ELEC Andrew H. Andersen 8
9 Precision Resistors Precision resistors will have a tolerance of 2%, 1%, 0.5%, 0.25% or 0.1% Some precision resistor values are identified using the color code with 5 color bands, the first 3 bands indicate the rated resistance value the 4 th band is the multiplier the 5 th band indicates the tolerance Other precision resistors use an alphanumeric coding The cost of the device is directly related to the precision higher precision = higher cost 23 July 2005 ELEC Color Coded Precision Resistors 23 July 2005 ELEC Andrew H. Andersen 9
10 Alphanumeric Labeling Two or three digits, and one of the letters R, K, or M are used to identify a resistance value The letter is used to indicate the multiplier, and its position is used to indicate decimal point position 23 July 2005 ELEC Fixed IC Resistors Often it is convenient to use multiple resistors mounted in IC packages in many of today's modern circuits 23 July 2005 ELEC Andrew H. Andersen 10
11 Cutaway View of a Resistor 23 July 2005 ELEC Variable Resistors Variable resistors are designed so that their resistance values can be changed A potentiometer is a three terminal variable resistor used to divide voltage A rheostat is a variable resistor used to control current 23 July 2005 ELEC Andrew H. Andersen 11
12 Examples of Variable Resistors 23 July 2005 ELEC Linear vs Logarithmic Taper Potentiometers 23 July 2005 ELEC Andrew H. Andersen 12
13 Power Resistors Used when the device must accommodate high currents Physically large to surface can dissipate heat into the environment Heats the air around the device may be very hot 23 July 2005 ELEC Andrew H. Andersen 13
Chapter 2. Chapter 2
Chapter 2 The Bohr atom The Bohr atom is useful for visualizing atomic structure. The nucleus is positively charged and has the protons and neutrons. Electrons are negatively charged and in discrete shells.
More informationUnit 2. ET Unit 2. Voltage, Current, and Resistance. Electronics Fundamentals Circuits, Devices and Applications  Floyd. Copyright 2009 Pearson
ET 115  Unit 2 Voltage, Current, and Resistance The Bohr atom The Bohr atom is useful for visualizing atomic structure. The nucleus is positively charged and has the protons and neutrons. Electrons are
More informationEE301 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 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 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 informationObjective of Lecture Discuss resistivity and the three categories of materials Chapter 2.1 Show the mathematical relationships between charge,
Objective of Lecture Discuss resistivity and the three categories of materials Chapter 2.1 Show the mathematical relationships between charge, current, voltage, and energy. Chapter 2.22.4 Define resistance
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 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 informationBasic Electricity. Chapter 2. Al Penney VO1NO
Basic Electricity Chapter 2 The Structure of Matter All matter is composed of Atoms. Atoms consist of: Neutrons; Protons; and Electrons Over 100 different atoms. These are called Elements. Atoms Electrostatic
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 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 informationELECTRICITY. Electric Circuit. What do you already know about it? Do Smarty Demo 5/30/2010. Electric Current. Voltage? Resistance? Current?
ELECTRICITY What do you already know about it? Voltage? Resistance? Current? Do Smarty Demo 1 Electric Circuit A path over which electrons travel, out through the negative terminal, through the conductor,
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 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 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 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 informationIntroduction to Electrical Theory and DC Circuits
Introduction to Electrical Theory and DC Circuits For Engineers of All Disciplines by James Doane, PhD, PE Contents 1.0 Course Overview... 4 2.0 Fundamental Concepts... 4 2.1 Electric Charges... 4 2.1.1
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 21 Electric Current and Circuits
Chapter 21 Electric Current and Circuits 1 As an introduction to this chapter you should view the following movie. If you cannot click on the link, then copy it and paste it into your web browser. http://www.ionaphysics.org/movies/vir.mp4
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 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 informationWhat are the two types of current? The two types of current are direct current and alternating current.
Electric Current What are the two types of current? The two types of current are direct current and alternating current. Electric Current The continuous flow of electric charge is an electric current.
More informationES250: Electrical Science. HW1: Electric Circuit Variables, Elements and Kirchhoff s Laws
ES250: Electrical Science HW1: Electric Circuit Variables, Elements and Kirchhoff s Laws Introduction Engineers use electric circuits to solve problems that are important to modern society, such as: 1.
More informationConceptual Physical Science 6 th Edition
Conceptual Physical Science 6 th Edition Chapter 8: STATIC AND CURRENT ELECTRICITY 1 Chapter 8: STATIC AND CURRENT ELECTRICITY Chapter 8: Read: All Homework: Four problems from the following set: 4, 6,
More informationChapter 33  Electric Fields and Potential. Chapter 34  Electric Current
Chapter 33  Electric Fields and Potential Chapter 34  Electric Current Electric Force acts through a field An electric field surrounds every electric charge. It exerts a force that causes electric charges
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 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 informationSYSTEMS OF UNITS. 1 st Class Basic of Electrical Engineering. Current and Voltage
SYSTEMS OF UNITS In the past, the systems of units most commonly used were the English and metric, as outlined in Table below. Note that while the English system is based on a single standard, the metric
More informationElectrical Forces arise from particles in atoms.
Electrostatics Electrical Forces arise from particles in atoms. The protons(+) in the nucleus attract the electrons and hold them in orbit Electrons()repel other electrons and protons repel other protons
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 informationBasic Electricity. ME 120 Lecture Notes. Portland State University Mechanical and Materials Engineering
Basic Electricity ME 120 Lecture Notes Portland State University Mechanical and Materials Engineering Learning Objectives Successful completion of this module will enable students to Link the basic model
More informationAlSaudia Virtual Academy Pakistan Online Tuition Online Tutor Pakistan Electricity
AlSaudia Virtual Academy Pakistan Online Tuition Online Tutor Pakistan Electricity ELECTRIC NATURE OF MATTER: The electric nature of matter means the ability of a matter to produce charge on it. The addition
More informationDC circuits, Kirchhoff s Laws
DC circuits, Kirchhoff s Laws Alternating Current (AC), Direct Current (DC) DC Circuits Resistors Kirchhoff s Laws CHM6158C  Lecture 2 1 Electric current Movement of electrons in a conductor Examples
More informationChapter 02. Voltage and Current. Atomic Theory Review. Atomic Theory Review. Atomic Theory Review. Electrical Charge.
Chapter 02 Voltage and Current Atom Atomic Theory Review Contains a nucleus of protons and neutrons Nucleus is surrounded by a group of orbiting electrons Electrons are negative, protons are positive Electrically
More informationDynamic Electricity. All you need to be an inventor is a good imagination and a pile of junk. Thomas Edison
Dynamic Electricity All you need to be an inventor is a good imagination and a pile of junk. Thomas Edison Review Everything is made of atoms which contain POSITIVE particles called PROTONS and NEGATIVE
More informationDirect Currents. We will now start to consider charges that are moving through a circuit, currents. Sunday, February 16, 2014
Direct Currents We will now start to consider charges that are moving through a circuit, currents. 1 Direct Current Current usually consists of mobile electrons traveling in conducting materials Direct
More information16.1 Electrical Current
16.1 Electrical Current Electric Current Electric Current When the ends of an electric conductor are at different electric potentials, charge flows from one end to the other Flow of Charge Charge flows
More informationChapter 3. Resistance. Copyright 2011 by Pearson Education, Inc. publishing as Pearson [imprint] Introductory Circuit Analysis, 12/e Boylestad
Chapter 3 Resistance OBJECTIVES Become familiar with the parameters that determine the resistance of an element and be able to calculate the resistance from the given dimensions and material characteristics.
More informationfehmibardak.cbu.tr Temporary Office 348, Mühendislik Fakültesi B Blok
fehmibardak.cbu.tr Temporary Office 348, Mühendislik Fakültesi B Blok 1 Course Progress Introductory level Electrostatic, Coulomb s Law Electric Field, Gauss Law Magnetic field, Maxwell s Equations Current,
More informationNotes on Electricity (Circuits)
A circuit is defined to be a collection of energygivers (active elements) and energytakers (passive elements) that form a closed path (or complete path) through which electrical current can flow. The
More informationIn the following information, you will study these three physical quantities as they relate to simple electrical circuits.
Module 7 Ohm's Law INTRODUCTION In this experiment, you will study Ohm's Law, the most fundamental relation used in the analysis of electrical circuits. Ohm's Law relates the quantities of voltage, electric
More informationIdeal wires, Ideal device models, Ideal circuits. Ideal models for circuit elements Wires
Ideal wires, Ideal device models, Ideal circuits Ideal models for circuit elements Wires Currents and Voltages Joints Resistors Voltage sources Current sources. EE 42 Lecture 1 1 Cast of Characters Fundamental
More informationSome Important Electrical Units
Some Important Electrical Units Quantity Unit Symbol Current Charge Voltage Resistance Power Ampere Coulomb Volt Ohm Watt A C V W W These derived units are based on fundamental units from the meterkilogramsecond
More informationElectroscope Used to are transferred to the and Foil becomes and
Electricity Notes Chapter 17 Section 1: Electric Charge and Forces Electric charge is a variety of independent all with one single name. Electricity is related to, and both () and (+) carry a charge.
More informationCharge The most basic quantity in an electric circuit is the electric charge. Charge is an electrical property of the atomic particles of which matter
Basic Concepts of DC Circuits Introduction An electric circuit is an interconnection of electrical elements. Systems of Units 1 Charge The most basic quantity in an electric circuit is the electric charge.
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 informationSection 1: Electric Charge and Force
Electricity Section 1 Section 1: Electric Charge and Force Preview Key Ideas Bellringer Electric Charge Transfer of Electric Charge Induced Charges Charging by Contact Electric Force Electric Field Lines
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 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 information(b) State the relation between work, charge and potential difference for an electric circuit.
Question Bank on ChElectricity 1. (a) Define the S.I unit of potential difference. (b) State the relation between work, charge and potential difference for an electric circuit. Calculate the potential
More informationChapter 18 Electric Currents
Chapter 18 Electric Currents 1 The Electric Battery Volta discovered that electricity could be created if dissimilar metals were connected by a conductive solution called an electrolyte. This is a simple
More information5. Positive charges one another.
1. Electric field lines indicate A. Both direction and relative strength B. Neither direction nor strength 5. Positive charges one another. A. Repel B. Attract 2. Whether or not charges will move in a
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 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 informationWhat does it mean for an object to be charged? What are charges? What is an atom?
What does it mean for an object to be charged? What are charges? What is an atom? What are the components of an atom? Define the following: Electric Conductor Electric Insulator Define the following: Electric
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 information4.2.1 Current, potential difference and resistance
4.2 Electricity Electric charge is a fundamental property of matter everywhere. Understanding the difference in the microstructure of conductors, semiconductors and insulators makes it possible to design
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 informationElectricity Courseware Instructions
Physics Electricity Courseware Instructions This courseware acts as a supplement to the classroom instruction. The five sections on the following slide link to the topic areas. Following the topic area
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 informationContinuous flow of electric charges. Current Electricity
Continuous flow of electric charges Current Electricity Did You Know? The voltage across a muscle cell in your body is about 70 millivolts. A millivolt (mv) is one thousandth of a volt. AC and DC DC Direct
More informationElectricity is the movement of electrical charge through a circuit (usually, flowing electrons.) The Greek word for amber is electron
Electricity is the movement of electrical charge through a circuit (usually, flowing electrons.) The Greek word for amber is electron Women in ancient Greece noticed that rubbing their amber jewelry against
More informationGreek Letter Omega Ω = Ohm (Volts per Ampere)
) What is electric current? Flow of Electric Charge 2) What is the unit we use for electric current? Amperes (Coulombs per Second) 3) What is electrical resistance? Resistance to Electric Current 4) What
More informationChapter 03. Resistance. Resistance of Conductors. Type of Material resistivity (Ω m) Type of Material. Length / Area. Resistance Formula
Chapter 03 Resistance Resistance of Conductors Resistance of material depends on several factors: Type of Material, Conductor length, or l Crosssectional area, A Temperature, T CC Source: Tsai Circuit
More informationRADIO AMATEUR EXAM GENERAL CLASS
RAELessons by 4S7VJ 1 RADIO AMATEUR EXAM GENERAL CLASS CHAPTER 1 BASIC ELECTRICITY By 4S7VJ 1.1 ELECTRIC CHARGE Everything physical is built up of atoms, or particles. They are so small that they cannot
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 informationWhich of these particles has an electrical charge?
Which of these particles has an electrical charge? A. Proton. B. Electron. C. Ion. D. All of the above. Which is the predominant carrier of charge in copper wire? A. Proton. B. Electron. C. Ion. D. All
More informationSNC1DI Unit Review: Static & Current Electricity
SNC1DI Unit Review: Static & Current Electricity 1. Be able to recognize the definitions for the following terms: Friction Contact Induction Lightning Electrostatic Series Pithball electroscope Insulators
More informationIn this unit, we will examine the movement of electrons, which we call CURRENT ELECTRICITY.
Recall: Chemistry and the Atom! What are the 3 subatomic Where are they found in the particles? atom? What electric charges do they have? How was a positive ion created? How was a negative ion created?
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 informationResistor. l A. Factors affecting the resistance are 1. Crosssectional area, A 2. Length, l 3. Resistivity, ρ
Chapter 2 Basic Laws. Ohm s Law 2. Branches, loops and nodes definition 3. Kirchhoff s Law 4. Series resistors circuit and voltage division. 5. Equivalent parallel circuit and current division. 6. WyeDelta
More informationCoulomb s constant k = 9x10 9 N m 2 /C 2
1 Part 2: Electric Potential 2.1: Potential (Voltage) & Potential Energy q 2 Potential Energy of Point Charges Symbol U mks units [Joules = J] q 1 r Two point charges share an electric potential energy
More information4.2.1 Current, potential difference and resistance Standard circuit diagram symbols. Content. Key opportunities for skills development WS 1.
4.2 Electricity Electric charge is a fundamental property of matter everywhere. Understanding the difference in the microstructure of conductors, semiconductors and insulators makes it possible to design
More informationE40M Charge, Current, Voltage and Electrical Circuits. M. Horowitz, J. Plummer, R. Howe 1
E40M Charge, Current, Voltage and Electrical Circuits M. Horowitz, J. Plummer, R. Howe 1 Understanding the Solar Charger Lab Project #1 We need to understand how: 1. Current, voltage and power behave in
More informationElectricity
Electricity Electric Charge There are two fundamental charges in the universe. Positive (proton) has a charge of +1.60 x 1019 C Negative (electron) has a charge of 1.60 x 1019 C There is one general
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 informationFigure 1. In the following information, you will study these three physical quantities as they relate to simple electrical circuits.
Module 7 Ohm s Law INTRODUCTION In this experiment, you will study Ohm s Law, the most fundamental relation used in the analysis of electrical circuits. Ohm s Law relates the quantities of voltage, electric
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 informationOhm s Law and Electronic Circuits
Production Ohm s Law and Electronic Circuits Page 1  Cyber Security Class ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. Thomas Edison Page 2  Cyber Security
More informationElectric Circuits. June 12, 2013
Electric Circuits June 12, 2013 Definitions Coulomb is the SI unit for an electric charge. The symbol is "C". Electric Current ( I ) is the flow of electrons per unit time. It is measured in coulombs per
More informationStandard circuit diagram symbols Content Key opportunities for skills development
4.2 Electricity Electric charge is a fundamental property of matter everywhere. Understanding the difference in the microstructure of conductors, semiconductors and insulators makes it possible to design
More informationElectron Theory. Elements of an Atom
Electron Theory Elements of an Atom All matter is composed of molecules which are made up of a combination of atoms. Atoms have a nucleus with electrons orbiting around it. The nucleus is composed of protons
More information3. The figure above shows two pith balls suspended by threads from a support. In the figure,
3. The figure above shows two pith balls suspended by threads from a support. In the figure, Student ID: 22133336 Exam: 002901RR  Electronics Basics When you have completed your exam and reviewed your
More informationNama :.. Kelas/No Absen :
Nama :.. Kelas/No Absen : TASK 2 : CURRENT AND RESISTANCE 1. A car battery is rated at 80 A h. An amperehour is a unit of: A. power B. energy C. current D. charge E. force 2. Current has units: A. kilowatthour
More informationElectrostatics and Charge. Creating Electric Fields
Electrostatics and Charge Creating Electric Fields Electric Charges Recall that all matter is made of atoms. Neutral atoms can acquire a charge in several different ways, all of which require movement
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 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 informationElectricity. From the word Elektron Greek for amber
Electricity From the word Elektron Greek for amber Electrical systems have two main objectives: To gather, store, process, transport information & Energy To distribute and convert energy Electrical Engineering
More informationFig. 11 Current Flow in a Resistive load
1 Electric Circuits: Current flow in a resistive load flows either from () to () which is labeled below as Electron flow or the Conventional flow from () to (). We will use conventional flow in this
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 informationIntroduction to Electric Circuit Analysis
EE110300 Practice of Electrical and Computer Engineering Lecture 2 and Lecture 4.1 Introduction to Electric Circuit Analysis Prof. Klaus YungJane Hsu 2003/2/20 What Is An Electric Circuit? Electrical
More informationChapter 3 Static and Current Electricity
Chapter 3 Static and Current Electricity 3.1 Static Electricity  the build up of an electronic charge on a body (object) Electroscope  a device for detecting (not measuring) static charge attraction/repulsion
More informationSPH3U1 Lesson 01 Electricity
ELECTRIC CURRENT AND POTENTIAL DIFFERENCE LEARNING GOALS Students will: Define what is meant by electric current. Solve problems involving current, charge and time. Know the difference between electron
More informationGas discharges. Current flow of electric charge. Electric current (symbol I) L 26 Electricity and Magnetism [3] examples of electrical discharges
L 26 Electricity and Magnetism [3] Electric circuits what conducts electricity what doesn t t conduct electricity Current voltage and resistance Ohm s s Law Heat in a resistor power loss Making simple
More informationITT Technical Institute ET215 Devices I Unit 1
ITT Technical Institute ET215 Devices I Unit 1 Chapter 1 Chapter 2, Sections 2.12.4 Chapter 1 Basic Concepts of Analog Circuits Recall ET115 & ET145 Ohms Law I = V/R If voltage across a resistor increases
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 informationECE 2100 Circuit Analysis
ECE 2100 Circuit Analysis Lesson 3 Chapter 2 Ohm s Law Network Topology: nodes, branches, and loops Daniel M. Litynski, Ph.D. http://homepages.wmich.edu/~dlitynsk/ esistance ESISTANCE = Physical property
More informationChapter 27: Current and Resistance
Chapter 7: Current and esistance In this section of the course we will be studying the flow of electric charge, current, in a circuit. We have already seen electric current when we first discussed electric
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 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 information