General Physics II
General Physics II PHY 114
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This 2 page Class Notes was uploaded by Miss Lucienne Hamill on Wednesday October 28, 2015. The Class Notes belongs to PHY 114 at Wake Forest University taught by Staff in Fall. Since its upload, it has received 8 views. For similar materials see /class/230739/phy-114-wake-forest-university in Physics 2 at Wake Forest University.
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Date Created: 10/28/15
Test Information for Test 1 Formulas to memorize Potential Electric Fields U 9V Capacitance Current F M V ICE q Q C AV Resistance 2 r 1 JA r A Parallel kgqr AV JEds C CC IdQdt E tot 1 2 r2 AV R E 3V Ser1es FqE x a Lii 73 IAV 6V C 0 C C Gauss s Law Ey a H 1 2 Units EAE y A as 6V NC Vm q 8 E E qm 0 Z 62 FCv Q VA Note The best way to learn the units is to learn the formulas and then remember what the units are for For example Farads are used to measure capacitance and from the formula Q C AV it is obvious that the units of capacitance are the same as QAV CV Formulas to know how to use but you need not memorize Constants Charge on Parallel Energy in a e 1602 x10 19 C Surface of Plate Capacitor Dipoles k 8988 X109 N mzCZ Conductor Capacitor U C AI2 1 p x E 2 039 A AKE 0 8854gtlt10 C2Nm2 E n CT usoE2 U 1 E g k 14723980 0 Current Densitv Temperature Dependence Resistivity Resistance J 7 qu p p 0 1 a T To 2 E Jp R pLA J ne Erm RR0laTT0 General Comments on Working Out Problems The test isn t exactly like webassign and therefore the problems won t be quite the same First and this is important I do take credit off for not showing units Keeping track of units is an important part of physics and often helps us recognize and check our mistakes In Webassign keeping calculations to two or three digits is always correct On tests you should generally follow the standard rules of significant digits However I don t mind if you keep an extra digit or even two beyond those given in the problem What I don t want to see is answers like E 36180359 Vm Rewrite answers like this in scientific notation 362 X 107 Vm or better still 362 MVm Material for test 1 Chapter 23 Electric Fields Chapter 24 Gauss s Law Chapter 25 Electric Potential Chapter 26 Capacitance and Dielectrics Chapter 27 Current and Resistance Organization of the Test Part 1 Multiple Choice 20 points For each question choose the best answer 2 points each questions 110 Part 11 Short answer 20 points Choose two of the following questions and give a short answer 13 sentences or brief sketch 10 points each questions 1113 Part III Calculation 60 points Choose three of the following four questions and perform the indicated calculations 20 points each questions 14 17
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