P31_078.PDF

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Chapter 31 - 31.78
78. We write i = i 0 e t/τ L and note that i = 10% i 0 .Wesolvefor t :
t = τ L ln i 0
i
i
3 . 00 Ω ln i 0
0 . 100 i 0
=1 . 54 s .
= L
R ln i 0
= 2 . 00 H
 
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