ch31-p004 - 4. (a) We recall the fact that the period is...

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() ( ) ( ) ( ) 3 21 11 (1 ) 212 . 5 0 s , 222 221 0H z nn tT n T nT n f µ −− =+ −= = =− × where n = 1, 2, 3, 4, . The earliest time is ( n =1) 2.50 s. t = (c) At = 1 4 , the current and the magnetic field in the inductor reach maximum values for the first time (compare steps a and c in Fig. 31-1). Later this will repeat every half- period (compare steps c and g in Fig. 31-1). Therefore, ( ) ) 2 1 2 1 1.25 s , 42 4 L TnT T tn n = − = − where n = 1, 2, 3, 4, . The earliest time is ( n =1) 1.25 s. t = 4. (a) We recall the fact that the period is the reciprocal of the frequency. It is helpful to refer also to Fig. 31-1. The values of t when plate A will again have maximum positive
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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