Equations

# Equations - Equation Sheet Constants PHY 112 0 = 8.85 x...

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Equation Sheet PHY 112 Constants k = 9 x10 9 Nm 2 /C 2 ε 0 = 8.85 x 10 -12 N -1 m -2 /C 2 e = 1.6 x 10 -19 C μ 0 = 4 π x 10 -7 Tm/A c = 3 x 10 8 m/sec h =6.62 x 10 -34 J sec Coulomb’s Law r F q 2 2 1 r q q k = Electric Field r E q 2 1 r q k = Potential r q k V 1 = Potential Energy qV U = Capacitance V Q C = Parallel Plate Capacitor d A C 0 κ = Energy in Capacitor 2 2 2 1 2 1 2 1 CV C Q QV U = = = Kinematics 2 0 2 1 t a t v x x x x + + = t a v x x = Resistivity A l R ρ = Ohm’s Law IR V = or IR E = Power R V R I IV P 2 2 = = = Resistors in Series etc R R R eq + + = 2 1

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Resistors in Parallel etc R R R eq + + = 2 1 1 1 1 Capacitors in Series etc C C C eq + + = 2 1 1 1 1 Capacitors in Parallel etc C C C eq + + = 2 1 Charging RC circuit - = - RC t e E V 1 0 Discharging RC circuit RC t e E V - = 0 Magnetic Force on Charge θ sin qvB F = Magnetic Force on Wire sin IBl F = Torque on Current Loop τ sin NIAB = Orbit in Magnetic Field qB mv r = Velocity Selector B E v = Magnetic Field from wire d I B π μ 2 0 = Magnetic Field from coil r I B 2 0 = (at center)
Magnetic Field from solenoid I l N B 0 μ = Magnetic Flux BA = φ Induced EMF t E - = Mutual Inductance t I M E - = Self Inductance t I L E - = Self Inductance of Coil 2 2 0 r l N L π = Energy/Unit Volume In Magnetic Field 2 0 2 1 B u = Energy in an Inductor 2 2 1 LI U = Charging LR circuit

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## This note was uploaded on 03/06/2009 for the course MAT 271 taught by Professor Surgent during the Fall '08 term at ASU.

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Equations - Equation Sheet Constants PHY 112 0 = 8.85 x...

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