MEP 382: Design of Applied Measurement Systems Lecture 3: DC & AC Circuit Analysis


 Shawn Garrett
 5 years ago
 Views:
Transcription
1 Faculty of Engineering MEP 38: Design of Applied Measurement Systems Lecture 3: DC & AC Circuit Analysis
2 Outline oltage and Current Ohm s Law Kirchoff s laws esistors Series and Parallel oltage Dividers Capacitors, Inductors and C circuits
3 Basic Electrical Circuit Higher electrical Potential Light Heat oltage Source Lower Electrical Potential oltage difference in potential energy, Current flows from regions of higher electrical potential to regions of lower electrical potential. Electrical Energy only flows in a closed path closed system DC (Direct Current) are those circuits with static or slowly varying values. AC (Alternating Current) signals are those with rapid change or regular periodic change source of these terms is a historical artifact Wires are considered ideal no resistance to flow of electrical energy The filament wire in the light bulb is a resistor that converts energy to light and heat
4 Simple Analogy oltage is a measure of electrical potential energy (units are volts) You can think of it as potential energy like water in a reservoir at the top of a hill The lowest energy state in the circuit is called Ground standing water at the bottom of the hill Current is the flow of electrons from a high energy state to a lower energy state (units are amperes) You can think of it as water flowing through pipes from the top to the bottom of a hill esistance is like narrow parts of the pipe (units are ohms) The more constrictions that are put in series, the slower the flow rate Total flow capacity is divided among parallel paths but the water has the same energy at the top and bottom of each parallel path Capacitance is like a little tank along the way (units are farads) Water (and potential energy in the form of a charge) can accumulate in the tank Just as the water s potential energy is converted to kinetic energy (velocity) as it moves down the hill, so is electrical energy converted into other forms of energy along the way (heat, light, mechanical energy) If you take this analogy too far, it breaks down, but it is a good place to start
5 Water Analogy Tank at the top of the hill esistors are like pipes A voltage source Is like a pump moving water from low potential energy (low altitude) to higher potential energy (higher altitude) Capacitors are like little tanks along the way Tank at the Bottom of the Hill (Ground)
6 Current Definitions Current is defined as flowing from higher potential energy to lower potential energy This is often expressed as flow from to This convention existed before the discovery of the electron, the basic atomic unit that carries electrical energy Electrons are negatively charged, so they actually flow from to, the opposite of current In almost all applications, we use the concept of current as our model/reference system Current is almost always represented by the variable I (i)
7 oltage Sources Series and Parallel In series, voltage sources add to increase voltage with no increase in current capacity Actual current may rise as voltage rises with a fixed resistive load In parallel, voltage sources do not increase voltage but they do increase the current capacity Exactly predicting the voltages requires a current loop analysis volts olts
8 Kirchoff slaws oltage The sum of voltage drops and rises around any path in a circuit in a closed path (start and end at the same point) must equal zero Since the voltage at any point in a circuit is an electrical energy potential, any path around the circuit must end up at the same energy potential or else the law of conservation of energy would be violated Current The sum of all the current entering a node of a circuit and leaving the node of a circuit must equal zero Since current is just the flow of electrons and electrons have an energy state and mass this is just a restatement of the laws of conservation of energy and conservation of mass i in I i in i3 out i i
9
10 Ohm s Law oltage Current x esistance voltage, I current, resistance I, I /, /I if you know can calculate the third Almost every measuring circuit in this course will use this relationship Symbol for resistor.5 olts AA Battery.5 olts  0 olts KiloOhm resistor Also called the Load Ω Current I.5 olts/000 Ohms.005 amperes.5 milliamps
11 Short Circuits and Open Circuits A short circuit is when the and of a voltage source are directly connected with zero or essentially zero resistance A wire or a piece of metal can do this Due to Ohm s law, when is zero or near zero then current goes to infinity (/I) This results in rapid heating and overloading the voltage supply An open circuit is when the and of a voltage source are not connected or connected by a very high resistance (> 00 Megaohms) In this case no current flows
12 oltage Sources In Series and Parallel I tot tot Load I Load I tot Load I tot I ( I I I ) max Load Load.5 I.5 I max For parallel sources, max is the highest of the two voltages. Exactly predicting the voltages requires a current loop analysis Load Itot
13 Property of material
14 esistors Series esistors in series add This type of circuit is a voltage divider if resistors are equal the intermediate voltage will be half 3 tot I ) ( ) ( ) ( I I I I tot tot
15 esistors  Parallel esistors in parallel add inverse This type of circuit is a current divider if resistances are equal, current down one leg is half of the current of a single resistor I I tot tot tot n I I tot... n Itot I I tot
16 oltage divider as the basis for instrumentation Circuits For all resistive sensors, the voltage divider is the primary circuit used in instrumentation esistive sensors are those whose resistance value changes with change in the measured quantity e.g. esistance Temperature Detector (TD) resistance changes with temperature, Strain Gage resistance changes with strain) sensor known sensor sensor Temperature known ( ) Known oltage () Known esistor (known) esistive Sensor (sensor) oltage Measurement Proportional To Sensor alue ()
17 Sensors for Current Two types of sensors are used for current Ammeters A shunt which is a precision very low resistance resistor over which a voltage drop is observed Typically large blocks of metal to dissipate heat Must cause minimum additional voltage drop typically millivolts A clamp An inductive sensor which surrounds a wire converting the electromagnetic field into a small AC current that can be read by a smaller meter with a shunt Current through only one conductor is measured If put both in the meter, they cancel out
18 Use of Digital Multi Meter (DMM) DMM Using DMM as ammeter Load   DMM Using DMM as voltmeter or ohmmeter To measure voltage (voltmeter function), measure ACOSS the load In parallel with the load To measure current (ammeter function), you have to measure through the load In series with the load To measure resistance (ohmmeter function), the circuit must be unpowered and then measure across the load You may have to remove the component to get an accurate reading as there may be other paths through the circuit that the ohmmeter function will measure
19 esistor Color Code Color st and nd Band 3rd Band Black 0 x Brown x0 ed x00 Orange 3 x000 Yellow 4 x0,000 Green 5 x00,000 Blue 6 x,000,000 iolet 7 x0,000,000 Gray 8 x00,000,000 White 9 x,000,000,000
20
21 DC Power Power oltage x Current I Since I (Ohms Law), Power also I^ for purely resistive direct current circuits Direct current (DC) where there is no periodic change in voltage or current Alternating current (AC) where there is periodic change in frequency and current Power is in watts A 9 battery with a 000 ohm resistor ( kiloohm) across the terminals will have.009 amps running through it which will generate.08 watts A 9 battery with a 0 ohm resistor across it will have.9 amps which will generate 8. watts
22 Capacitors and Inductors Capacitors store electrical energy in static charge Current is a function of the change in voltage with respect to time Often made by a dielectric between two parallel plates Inductors store electrical energy in an electromagnetic field oltage is a function of the change in current Often implemented by a coil of wire Symbol for capacitor Symbol for inductor
23 Introduction To Capacitors Capacitance of a device made from two parallel plates separated by a dielectric is C The dielectric constant times the area of the plate divided by the distance between the plates Capacitance is larger as the area of the plates increases and is smaller as the distance between the plates increases Capacitance measured in FAADS which are very large units of measure. Most electronic circuits uses capacitances in the microfarad to picofarad range Most batteries are just special capacitors Energy stored in a capacitor One half of the capacitance times the voltage squared E ε A D Symbol for capacitor C
24 Capacitors Can act as integrators and ac filters C Can act as differentiators and DC blocks C
25
26 Alternate Symbol for capacitor
27
28 C Circuit Is like filling a closed tank, current keeps flowing until the tank is full, and then it stops flowing Labview I simulates and predicts this AA Battery.5 olts KiloOhm resistor Ω microfarad capacitor
29
30 ChargeDischarge of a microfarad capacitor with a MegaOhm resistor Discharge initiated at t000 msec
Direct 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 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 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 informationLecture #3. Review: Power
Lecture #3 OUTLINE Power calculations Circuit elements Voltage and current sources Electrical resistance (Ohm s law) Kirchhoff s laws Reading Chapter 2 Lecture 3, Slide 1 Review: Power If an element is
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 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 informationR R V I R. Conventional Current. Ohms Law V = IR
DC Circuits opics EMF and erminal oltage esistors in Series and in Parallel Kirchhoff s ules EMFs in Series and in Parallel Capacitors in Series and in Parallel Ammeters and oltmeters Conventional Current
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 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 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 informationAC vs. DC Circuits. Constant voltage circuits. The voltage from an outlet is alternating voltage
Circuits AC vs. DC Circuits Constant voltage circuits Typically referred to as direct current or DC Computers, logic circuits, and battery operated devices are examples of DC circuits The voltage from
More informationDirectCurrent Circuits. Physics 231 Lecture 61
DirectCurrent Circuits Physics 231 Lecture 61 esistors in Series and Parallel As with capacitors, resistors are often in series and parallel configurations in circuits Series Parallel The question then
More informationECE2262 Electric Circuits. Chapter 6: Capacitance and Inductance
ECE2262 Electric Circuits Chapter 6: Capacitance and Inductance Capacitors Inductors Capacitor and Inductor Combinations OpAmp Integrator and OpAmp Differentiator 1 CAPACITANCE AND INDUCTANCE Introduces
More informationPhysics 115. General Physics II. Session 24 Circuits Series and parallel R Meters Kirchoff s Rules
Physics 115 General Physics II Session 24 Circuits Series and parallel R Meters Kirchoff s Rules R. J. Wilkes Email: phy115a@u.washington.edu Home page: http://courses.washington.edu/phy115a/ 5/15/14 Phys
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 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 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 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 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 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 informationCHEM*3440. Current Convention. Charge. Potential Energy. Chemical Instrumentation. Rudimentary Electronics. Topic 3
urrent onvention HEM*3440 hemical nstrumentation Topic 3 udimentary Electronics ONENTON: Electrical current flows from a region of positive potential energy to a region of more negative (or less positive)
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 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 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 informationin series Devices connected in series will have the same amount of charge deposited on each capacitor. But different potential difference. That means
Electric Field Electricity Lecture Series Electric Field: Field an area where any charged object will experience an electric force Kirchoff s Laws The electric field lines around a pair of point charges
More informationSyllabus and Course Overview!
Electronics Lab! Syllabus and Course Overview! oltage Current and Ohm s Law! Kirchoff s Laws! The oltage Divider! Syllabus and Course Overview! n http://www.stlawu.edu/academics/programs/physics! oltage,
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 informationBASIC ELECTRONICS PROF. T.S. NATARAJAN DEPT OF PHYSICS IIT MADRAS LECTURE3 ELECTRONIC DEVICES II RESISTOR SERIES & PARALLEL
BASIC ELECTRONICS PROF. T.S. NATARAJAN DEPT OF PHYSICS IIT MADRAS LECTURE3 ELECTRONIC DEVICES II RESISTOR SERIES & PARALLEL Hello everybody we are doing a course on basic electronics by the method of
More information2. The following diagram illustrates that voltage represents what physical dimension?
BioE 1310  Exam 1 2/20/2018 Answer Sheet  Correct answer is A for all questions 1. A particular voltage divider with 10 V across it consists of two resistors in series. One resistor is 7 KΩ and the other
More informationECE2262 Electric Circuits. Chapter 6: Capacitance and Inductance
ECE2262 Electric Circuits Chapter 6: Capacitance and Inductance Capacitors Inductors Capacitor and Inductor Combinations 1 CAPACITANCE AND INDUCTANCE Introduces two passive, energy storing devices: Capacitors
More informationDEPARTMENT OF COMPUTER ENGINEERING UNIVERSITY OF LAHORE
DEPARTMENT OF COMPUTER ENGINEERING UNIVERSITY OF LAHORE NAME. Section 1 2 3 UNIVERSITY OF LAHORE Department of Computer engineering Linear Circuit Analysis Laboratory Manual 2 Compiled by Engr. Ahmad Bilal
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 informationElectrical Engineering Fundamentals for NonElectrical Engineers
Electrical Engineering Fundamentals for NonElectrical Engineers by Brad Meyer, PE Contents Introduction... 3 Definitions... 3 Power Sources... 4 Series vs. Parallel... 9 Current Behavior at a Node...
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 2401 Summer 2, 2008 Exam II
Physics 2401 Summer 2, 2008 Exam II e = 1.60x1019 C, m(electron) = 9.11x1031 kg, ε 0 = 8.845x1012 C 2 /Nm 2, k e = 9.0x10 9 Nm 2 /C 2, m(proton) = 1.67x1027 kg. n = nano = 109, µ = micro = 106, m
More informationPHY102 Electricity Course Summary
TOPIC 1 ELECTOSTTICS PHY1 Electricity Course Summary Coulomb s Law The magnitude of the force between two point charges is directly proportional to the product of the charges and inversely proportional
More informationCAPACITORS / ENERGY STORED BY CAPACITORS / CHARGING AND DISCHARGING
PHYSICS A2 UNIT 4 SECTION 3: CAPACITANCE CAPACITORS / ENERGY STORED BY CAPACITORS / CHARGING AND DISCHARGING # Question CAPACITORS 1 What is current? Current is the rate of flow of charge in a circuit
More informationCircuits. 1. The Schematic
+ ircuits 1. The Schematic 2. Power in circuits 3. The Battery 1. eal Battery vs. Ideal Battery 4. Basic ircuit nalysis 1. oltage Drop 2. Kirchoff s Junction Law 3. Series & Parallel 5. Measurement Tools
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 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 26 DirectCurrent and Circuits.  Resistors in Series and Parallel  Kirchhoff s Rules  Electric Measuring Instruments  RC Circuits
Chapter 26 DirectCurrent and Circuits  esistors in Series and Parallel  Kirchhoff s ules  Electric Measuring Instruments  C Circuits . esistors in Series and Parallel esistors in Series: V ax I V
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 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 informationCapacitor Construction
Capacitor Construction Topics covered in this presentation: Capacitor Construction 1 of 13 Introduction to Capacitors A capacitor is a device that is able to store charge and acts like a temporary, rechargeable
More informationPhysics 1402: Lecture 10 Today s Agenda
Physics 1402: Lecture 10 Today s Agenda Announcements: Lectures posted on: www.phys.uconn.edu/~rcote/ HW assignments, solutions etc. Homework #3: On Masterphysics : due Friday at 8:00 AM Go to masteringphysics.com
More informationCapacitance. A different kind of capacitor: Work must be done to charge a capacitor. Capacitors in circuits. Capacitor connected to a battery
Capacitance The ratio C = Q/V is a conductor s self capacitance Units of capacitance: Coulomb/Volt = Farad A capacitor is made of two conductors with equal but opposite charge Capacitance depends on shape
More informationPractical 1 RC Circuits
Objectives Practical 1 Circuits 1) Observe and qualitatively describe the charging and discharging (decay) of the voltage on a capacitor. 2) Graphically determine the time constant for the decay, τ =.
More informationElectric Charges & Current. Chapter 12. Types of electric charge
Electric Charges & Current Chapter 12 Types of electric charge Protons w/ + charge stuck in the nucleus Electrons w/  charge freely moving around the nucleus in orbits 1 Conductors Allow the easy flow
More informationElectric Currents and Circuits
Electric Currents and Circuits Producing Electric Current Electric Current flow of charged particles Need a potential difference to occur Conventional Current flow of positive charges flowing from positive
More informationENERGY AND TIME CONSTANTS IN RC CIRCUITS By: Iwana Loveu Student No Lab Section: 0003 Date: February 8, 2004
ENERGY AND TIME CONSTANTS IN RC CIRCUITS By: Iwana Loveu Student No. 416 614 5543 Lab Section: 0003 Date: February 8, 2004 Abstract: Two charged conductors consisting of equal and opposite charges forms
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 informationIntroduction to AC Circuits (Capacitors and Inductors)
Introduction to AC Circuits (Capacitors and Inductors) Amin Electronics and Electrical Communications Engineering Department (EECE) Cairo University elc.n102.eng@gmail.com http://scholar.cu.edu.eg/refky/
More informationSECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM
SECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM Unit Objectives Describe the structure of an atom. Identify atoms with a positive charge and atoms with a negative charge. Explain
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 informationDC Circuits. Electromotive Force Resistor Circuits. Kirchoff s Rules. RC Circuits. Connections in parallel and series. Complex circuits made easy
DC Circuits Electromotive Force esistor Circuits Connections in parallel and series Kirchoff s ules Complex circuits made easy C Circuits Charging and discharging Electromotive Force (EMF) EMF, E, is the
More informationCircuits. Electric Current & DC Circuits Circuits. Unit 6. April Electric Current. Electric Current. Electric Current. ΔQ Δt
Electric Current & DC Circuits Electric Current & DC Circuits Circuits Conductors esistivity and esistance Click on the topic to go to that section Circuit Diagrams Measurement Electric Current Circuits
More informationCHAPTER INTRODUCTION TO ELECTRIC CIRCUITS. C h a p t e r INTRODUCTION
C h a p t e r CHAPTE NTODUCTON TO ELECTC CCUTS.0 NTODUCTON This chapter is explaining about the basic principle of electric circuits and its connections. The learning outcome for this chapter are the students
More informationI depicted in Figure 1. When a current of I amps (A) flows through the resistor, a voltage drop V AB volts (V) appears across the terminals A and B.
ntroduction to DC Circuits v 0.92: September 20, 2018 Gerald ecktenwald gerry@pdx.edu 1 ntroduction Engineers from all disciplines need to have working knowledge of basic electrical circuits. These notes
More informationDirect Current (DC): In a DC circuit the current and voltage are constant as a function of time. Power (P): Rate of doing work P = dw/dt units = Watts
Lecture 1: Introduction Some Definitions: Current (I): Amount of electric charge (Q) moving past a point per unit time I dq/dt Coulombs/sec units Amps (1 Coulomb 6x10 18 electrons) oltage (): Work needed
More informationBasic Electronics. Introductory Lecture Course for. Technology and Instrumentation in Particle Physics Chicago, Illinois June 914, 2011
Basic Electronics Introductory Lecture Course for Technology and Instrumentation in Particle Physics 2011 Chicago, Illinois June 914, 2011 Presented By Gary Drake Argonne National Laboratory drake@anl.gov
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 informationLecture #2 Charge, Current, Energy, Voltage Power Kirchhoff s Current Law Kirchhoff s Voltage Law
EECS 42 Introduction to Electronics for Computer Science Andrew R. Neureuther Lecture #2 Charge, Current, Energy, Voltage Power Kirchhoff s Current Law Kirchhoff s Voltage Law Corrections Slide 3 and 9
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 informationElectrical measurements:
Electrical measurements: Last time we saw that we could define circuits though: current, voltage and impedance. Where the impedance of an element related the voltage to the current: This is Ohm s law.
More informationUNIVERSITY OF TECHNOLOGY, JAMAICA Faculty of Engineering and Computing School of Engineering
UNIVERSITY OF TECHNOLOGY, JAMAICA Faculty of Engineering and Computing School of Engineering SYLLABUS OUTLINE FACULTY: SCHOOL/DEPT: COURSE OF STUDY: Engineering and Computing Engineering Diploma in Electrical
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 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 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 informationENGR 2405 Chapter 6. Capacitors And Inductors
ENGR 2405 Chapter 6 Capacitors And Inductors Overview This chapter will introduce two new linear circuit elements: The capacitor The inductor Unlike resistors, these elements do not dissipate energy They
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 informationElectric Circuits. AP Physics 1
Electric Circuits AP Physics Potential Difference =oltage=emf n a battery, a series of chemical reactions occur in which electrons are transferred from one terminal to another. There is a potential difference
More information2. Basic Components and Electrical Circuits
1 2. Basic Components and Electrical Circuits 2.1 Units and Scales The International System of Units (SI) defines 6 principal units from which the units of all other physical quantities can be derived
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 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 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 information[1] (b) Fig. 1.1 shows a circuit consisting of a resistor and a capacitor of capacitance 4.5 μf. Fig. 1.1
1 (a) Define capacitance..... [1] (b) Fig. 1.1 shows a circuit consisting of a resistor and a capacitor of capacitance 4.5 μf. S 1 S 2 6.3 V 4.5 μf Fig. 1.1 Switch S 1 is closed and switch S 2 is left
More informationElectricity and Light Pre Lab Questions
Electricity and Light Pre Lab Questions The pre lab questions can be answered by reading the theory and procedure for the related lab. You are strongly encouraged to answers these questions on your own.
More informationThe Basic Capacitor. Dielectric. Conductors
Chapter 9 The Basic Capacitor Capacitors are one of the fundamental passive components. In its most basic form, it is composed of two conductive plates separated by an insulating dielectric. The ability
More informationPhysics 214 Spring
Lecture 23 March 4 2016 The elation between Voltage Differences V and Voltages V? Current Flow, Voltage Drop on esistors and Equivalent esistance Case 1: Series esistor Combination and esulting Currents
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 informationCapacitors are devices which can store electric charge. They have many applications in electronic circuits. They include:
CAPACITORS Capacitors are devices which can store electric charge They have many applications in electronic circuits They include: forming timing elements, waveform shaping, limiting current in AC circuits
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 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 information7/06 Electric Fields and Energy
Part ASome standard electric field and potential configurations About this lab: Electric fields are created by electric charges and exert force on charges. Electric potential gives an alternative description.
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 informationChapter 2 Circuit Elements
hapter ircuit Elements hapter ircuit Elements.... Introduction.... ircuit Element onstruction....3 esistor....4 Inductor... 4.5 apacitor... 6.6 Element Basics... 8.6. Element eciprocals... 8.6. eactance...
More informationPretest ELEA1831 Module 11 Units 1& 2 Inductance & Capacitance
Pretest ELEA1831 Module 11 Units 1& 2 Inductance & Capacitance 1. What is Faraday s Law? Magnitude of voltage induced in a turn of wire is proportional to the rate of change of flux passing through that
More informationMan Struck By Lightning: Faces Battery Charge. Electricity
Man Struck By Lightning: Faces Battery Charge Electricity Properties of Electric Charge (Elektrisk ladning) Electric charges (q) repel or attract each other Like charges repel Opposite charges attract
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 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 informationNational 5 Physics. Electricity and Energy. Notes
National 5 Physics Electricity and Energy Notes Name. 1 P a g e Key Area Notes, Examples and Questions Page 3 Conservation of energy Page 10 Electrical charge carriers and electric fields and potential
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 informationLecture 1. Electrical Transport
Lecture 1. Electrical Transport 1.1 Introduction * Objectives * Requirements & Grading Policy * Other information 1.2 Basic Circuit Concepts * Electrical l quantities current, voltage & power, sign conventions
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 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 informationMonday July 14. Capacitance demo slide 19 Capacitors in series and parallel slide 33 Elmo example
Monday July 14 Lecture 5 Capacitance demo slide 19 Capacitors in series and parallel slide 33 Elmo example Lecture 6 Currents and esistance Lecture 9 Circuits Wear Microphone 1 3 Lecture 6 Current and
More informationFE Review 2/2/2011. Electric Charge. Electric Energy ELECTRONICS # 1 FUNDAMENTALS
FE eview ELECONICS # FUNDAMENALS Electric Charge 2 In an electric circuit there is a conservation of charge. he net electric charge is constant. here are positive and negative charges. Like charges repel
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 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 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 information