ch26_p11 - 11(a The current resulting from this non-uniform...

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1 1. (a) The current resulting from this non-uniform current density is 23 2 4 2 0 0 cylinder 0 22 2 (3.40 10 m) (5.50 10 A/m ) 1.33 A 33 R a J i J dA r rdr R J R ππ π == = = × × = ³³ . (b) In this case, 2 4 2 00 cylinder 0 11 1 2 (3.40 10 m) (5.50 10 A/m ) 0.666 A. R b r i J dA J rdr R J R §· = = × × ¨¸ ©¹ = (c) The result is different from that in part (a) because J b is higher near the center of the
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