876_Physics ProblemsTechnical Physics

876_Physics ProblemsTechnical Physics - 216 Faradays Law...

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216 Faraday’s Law SOLUTIONS TO PROBLEMS Section 31.1 Faraday’s Law of Induction Section 31.3 Lenz’s Law P31.1 ε == = ∆Φ B t NBA t a f 500 mV P31.2 = −× ⋅⋅ F H G I K J F H G I K J ∆Φ B tt BA af ej 2 50 8 00 10 100 11 4 .. . T 0.500 T m s Ns 1 T C m VC 1 N m 2 = 160 . mV and I R loop mV 2.00 mA = 0800 . . P31.3 θ π θθ =− F H G I K J × °− ° F H G I K J N BA t NB r t fi ∆∆ cos cos cos . cos cos . 26 2 25 0 50 0 10 0 500 180 0 0200 T m s =+ 982 . m V P31.4 (a) τ = d dt A dB dt AB e B t Φ max (b) 0 160 0 350 200 379 4.00 2 00 . . . m T s mV 2 e (c) At t = 0 = 28 0 . mV P31.5 Noting unit conversions from FvB q and Uq V = , the induced voltage is F H G I K J = × F H G I K J F H G I K J =
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