P30_034 - 34. We use Amperes law: B ds = 0 i, where the...

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34. We use Ampere’s law: H ~ B · d~s = µ 0 i , where the integral is around a closed loop and i is the net current through the loop. For path 1, the result is I 1 ~ B · d~s = µ 0 ( 5 . 0A+3 . 0A)=( 2 . 0 A)(4 π × 10 7 T · m / A) = 2 . 5 × 10 6
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