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Formula_Sheet_Prelim_1

Formula_Sheet_Prelim_1 - Possibly Useful Information Fe =...

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Possibly Useful Information: F e = kq 1 q 2 r 2 = q 1 q 2 4 π ε o r 2 F = q E E N A B N A E = kQ r 2 = Q 4 π ε o r 2 E = 2k λ r = λ 2 π ε o r Φ E = 4 π kQ encl = Q encl ε o E = 2 π k σ = σ 2 ε o E = 4 π k σ = σ ε o Φ E = E d A = E dA V ba = V(b) - V(a) = - a b E d U e ( r ) = qV( r ) V = kQ r = Q 4 π ε o r E x (x) = - dV(x) dx E ( r ) = - V( r ) U e = kq 1 q 2 r = q 1 q 2 4 π ε o r J = nq v d = nq 2 τ m E = 1 ρ E I = dQ dt = JA R = V I = ρ L A ρ (T) = ρ (T o )[1 + α (T - T o )] R eq = R 1 + R 2 κ = E out /E in P = IV = V 2 R = I 2 R 1 R eq = 1 R 1 + 1 R 2 C = Q V = κ ε o A d 1 C eq = 1 C 1 + 1 C 2 U C = 1 2 QV = 1 2 Q 2 C = 1 2 CV 2 u E = 1 2 κ ε o E 2 C eq = C 1 + C 2 Q(t) = Q f (1 - e -t/ τ ) Q(t) = Q o e -t/ τ τ = RC I(t) = I o e -t/ τ λ = charge/length σ = charge/area ρ = charge/volume E breakdown air
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