Physics : Electricity and Magnetism Exam Formula Sheet Review

Please explain and define each of the formulas below in details, what each symbol represent and when to use the

formula, along with possible questions in the exam to find different values in a formula (E.g Multi part questions)

*** Please explain each of the formulas in the formula sheet (Formula Sheet will be used in the exam)

Given the Constants

Constants mass of the proton = m = 1.67 x 10-2 kg mass of the electron = me = 9.11 x 10 $1 kg Coulomb's law constant = k = 1 = 9.0 x 109 Nm2/C2 permittivity constant = Co = 8.85 x 10-12 C2/Nm2 permeability constant = Mo = 4x x 10'Tm/A = 1.26 x 10- Tm/A fundamental unit of charge = e = 1.60 x 10-19COL R= Resistivity A Material (0 . m) AV Copper 1.7 X 10-8 R Aluminum 2.7 X 10-8 Tungsten (20'C) 5.6 X 10 8 PR = 1AVR = 12R = (AVR)2 R Tungsten (1500 C) 5.0 X 10-7 Iron 9.7 X 10-8 Ch.23 Nichrome 1.5 X 10 6 A Vloop = EAVi Kirchhoff's loop law Seawater 0.22 Reg = R1 + R2 + R3 + ... series resistors Blood (average) 1.6 Muscle 13 1 1+...) Rea = (R, + R2 +R3 parallel resistors Fat 25 Pure water 2.4 X 105 T = RC Cell membrane 3.6 X 10' AVc = Voe i capacitor discharging Vc = Vbattery (1 - e i ) capacitor charging Table 21.3 Dielectric constants of some Ch.24 materials at 20 C Ho I Material Dielectric constant k Bwire = 2nr Vacuum 1 (exactly) Ho I Air 1.00054* Bloop = 2 R Teflon 2.0 HONI Paper 3.0 Bsolenoid = Pyrex glass 4.8 Fcharge = |qlvB sina (direction given by the right-hand Cell membrane 9.0 rule) Ethanol 24 Fwire = ILBsin a Water 80 Ch.25 Strontium 300 titanate E = VIB Use 1.00 in all calculations D = AB cose