ch29-p047 - 47. For r a , B (r ) = 0ienc 2r = 0 2r 0 J ( r...

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() 2 72 3 2 7 00 3 (4 10 T m/A)(310A/m )(3.1 10 m / 2) 1.0 10 T. 33 ( 3 . 1 1 0 m ) Jr Br a µ −− π× × == = × × (c) At , ra = 3 7 (4 10 T m/A)(310A/m )(3.1 10 m) 4.0 10 T. Ja Br a × = = × 47. For , 2 0en c 0 0 0 0 0 22 . 2 3 rr iJ r r r d r J r d r a a µµ ⎛⎞ = = ⎜⎟
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