Question

17 HW10 C5 of 13 xercise 28.17 Conslants 20 kA We can model such a current as the equivalent of a very ong Express your answer using two signilicant figures bolts can camy currents up to Bi 7310 T straight wie e Awrs Correct How does this feld (Ba) compare se one (Be) you would exparience by beng 55 cmr
Part b says 10 A

Answer 1

(A) B_1 = mu_0 I/2 pi d = 2 times 10^- 7 times 20 times 10^3/5.5 = 7.3 times 10^- 4 T (B) = B_1/B_2 = mu_0 I_1/2 pi d_1/mu_0 I_2/2 pi d_2 = I_1/I_2 times d_2/d_1 = 20 times 10^3/10 times 5.5 times 10^- 2/5.5 = 20