915_Physics ProblemsTechnical Physics

915_Physics ProblemsTechnical Physics - Chapter 32 a L = L...

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Chapter 32 255 P32.61 (a) ε L L dI dt dt dt =− = − 100 20 0 20 0 . . . mH mV af (b) QI d t t d t t tt == = zz 00 2 20 0 10 0 .. V Q C t t C = = × 10 0 100 10 10 0 2 6 2 . . . F MV s 2 ej (c) When Q C LI 2 2 2 1 2 , or × ≥× 10 0 2 1 00 10 1 2 200 2 2 6 3 2 . . t t , then 100 400 10 49 2 . The earliest time this is true is at t = 400 10 632 9 s s µ . P32.62 (a) L L dI dt L d dt Kt LK a f (b) I dQ dt = ,s o Q Idt Ktdt Kt = 2 1 2 and V Q C Kt C C = 2 2 (c) When 1 2 1 2 2 2 CV L I C bg = , 1 2 4 1 2 24 2 22 C Kt C LK t F H G I K J = Thus tL C = 2 P32.63 1 2 1 1 2 2 2 2 Q CC Q LI = F H G I K J + so I Q CL = 3 4 2 . The flux through each turn of the coil is Φ B LI N Q N L C 2 3 where N is the number of turns. P32.64 B NI r = π 0 2 (a) Φ B a b a b BdA NI r hdr NIh dr r NIh b a = = F H G I K J z 0 2 ln L N I Nh b a B F H G I K J Φ 0 2 2 ln (b) L = F H G I K J = 0 2 500 0 010 0
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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