ch32-p024 - 24. (a) Fig. 32-35 indicates that i = 4.0 A...

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24. (a) Fig. 32-35 indicates that i = 4.0 A when t = 20 ms. Thus, B i = µ o i /2 π r = 0.089 mT. (b) Fig. 32-35 indicates that i = 8.0 A when t = 40 ms. Thus, B i 0.18 mT. (c) Fig. 32-35 indicates that i = 10 A when t > 50 ms. Thus, B i 0.220 mT. (d) Eq. 32-4 gives the displacement current in terms of the time-derivative of the electric field: i d = ε o A ( dE/dt ), but using Eq. 26-5 and Eq. 26-10 we have E = ρ i/A (in terms of the real current); therefore, i d = ε o ρ
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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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