ch29-p072 - 72. (a) The radial segments do not contribute...

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00 (7 /4 rad) ˆˆ kk 4 (4.00 m) 4 (2.00 m) P ii B µ πµ π ππ =− G where i = 0.200 A. This yields B = 2.75 × 10 8 k ^ T, or | B | = 2.75 × 10 8 T. (b) The direction is ˆ k , or into the page. 72. (a) The radial segments do not contribute to
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