Midterm Complete Studyguide
Midterm Complete Studyguide
Popular in Survey of Electricity and Electrons
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This 3 page Study Guide was uploaded by Rachel Antal on Monday October 12, 2015. The Study Guide belongs to at Kent State University taught by Roberto Uribe Rendon in Fall 2015. Since its upload, it has received 92 views. For similar materials see Survey of Electricity and Electrons in Applied Science at Kent State University.
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Date Created: 10/12/15
Survey of Electricity and Electrons Midterm Study Guide Created by Rachel Antal IMPORTANT How to take this test The test is split into 2 parts an in class portion on Thursday October 15th and an online portion open from Thursday the 15th Sunday the 18th at night The in class portion is all problem solving You will have the entire class time to nish You must show your work to get full credit The problems come directly from the homework which IS available to view online through Blackboard No personal notes are allowed BUT it is OPEN BOOK Bring your textbook and a calculator as no phones are allowed The take home portion is all questions from the weekly take home quizzes The quizzes unfortunately are not up to review online through Blackboard at this time You will only have ONE attempt unlike the quizzes which allowed multiple attempts Concepts Chapter 1 Matter occupies mass and has space See you matter Elements made of matter are the basic building blocks of nature 100 known elements Atoms are the smallest part of matter that retains the physical characteristics of an element De ne and understand the parts of an atom Nucleus protons neutrons electrons Understand how to nd atomic number and weight Shell valence shell and valence De ne charge measured in C Coulombs and understand its forces that attract and repel One electron charge is 16x1019 Know Ionization and what positive and negative ions are Know the difference between conductors and insulators and semiconductors Know some examples of elements for both see also resistivity and conductance De ne current measured in Ampere A De ne Resistance R measured in Ohms abbreviated by the Greek letter omega Understand how voltage can be produced measured in Volts V Magnetism is most common method Battery rating and life R and measured in mAh The difference in AC Alternating current and DC direct current Know how temperature affect resistance Know resistors and a basic understanding of color codes De ne Power measured in Watts W and electric power and power dissipation Understand a fuse and the electric switch Ohms Law Expresses the fact that the resistance is independent of the voltage or current applied to a device And Kirchhoff s Voltage Law KVL In a closed circuit the sum of all voltage raises is equal to the sum of all voltage drops Kirchhoff s Current Law KCL The sum of all the currents entering a node is equal to the sum of all currents leaving a node Finally series vs parallel circuits Chapter 2 Nikola tesla known as father of Alternating Current Created AC Generator Yipee Functions and parts of an AC Generator Armature sinusoidal waveform sine wave also identical to trig function cycles alternations revolutions peak values and periods of the wave created AC values sine wave has 2 numbers associated with it The degree of rotation and the amplitude De ne Period T Frequency f which is expressed in hertz AC nomenclature i l v V Phase angle represented by the Greek letter Theta De ne effective values also called rms value De ne Polyphase power These are systems that are able to generate several phaseshifted sine waves Usually 3 Know 3 examples of nonsinusoidal wave forms square triangular sawtooth May not be on test THAT SHOULD HELP WITH THE TAKE HOME PORTION Problems and Formulas everyone s favorite Coulombs C is the force of 1 NewtonN separated by 1 meterm lQT l current measured in amps Q quantity of charge in coulombs ttime in seconds V WQ V voltage Wenergy given to charges measured in joules j Q charge moved measured in C L Rl R charge stored in battery lcurrent In amps In series formulas lT I1 l2 l3 current ET E1 E2 E voltage In parallel formulas current expressed as IT l1 l2 l3 Voltage expressed as ET E1 E2 E3 RVl Rresistance Vvolts lcurrent OHM S LAW for resistivity p Greek letter rho Rresistance A amps lowercase quotLquot nd Conductance G derived by R1G or G1R Resistance as affected by temperature I I l39 quot1 61 T T l and since so then P VI ltEectric power formula in depth Kirchhoff s Voltage Law E V1 V2 V3 Series Circuits RTR1R2R3 Resistors in series VRI because VRT Voltage drops of resistors in series V1IR1 V2IR2 and V3R3 Power in a series circuit P5 E XIT i E ll 1 J1Tquot Parallel Circuits VR EV1V2V3 ITI1I2I3 so then quotI quotl 1 quota Power of parallel circuit P5 EIT EI1 I2 I3 Ell EI2 EI3 The sum of the powers dissipated by the resistors in the circuit is equal to the power supplied by the voltage source Angular velocity 2 T period a a l I Jf a Y T Frequency 0 in general f1T Instantaneous values vt Vo sin2pft q Instantaneous power p Iprsin22pft q Average power Pave Ipr ltsin22pft qgt Effective values for different waveforms Erms 0707Ep for a sinusoidal waveform Erms 0577Ep for a triangular waveform Erms Ep for a square waveform these may not be on test THIS SHOULD HELP THOSE WHO DON T HAVE THE TEXTBOOK I hope this helps you guys I am not allowed to post the homework problems directly due to copyrighted material rules Examples of problems and notes from lecture class can be found on studysoupcom Search school under KSU and this course title name quotSurvey of Electricity and Electronsquot Best of luck
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