ch29-p085 - 85. (a) The field in this region is entirely...

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22 00 e n c 0 || 222 2 ww c i i ii r R B rrr r R R µµ µµπ π πππ ⎛⎞ =− ⎜⎟ ⎝⎠ G where r = 0.0030 m, R i = 0.0020 m, R o = 0.0040 m and i c = 24 A. Thus, we find 4 ||9 . 31 0T . B G (c) Now, in the external region, the individual fields from the two conductors cancel completely (since i c = i w ): G B = 0. 85. (a) The field in this region is entirely due to the long wire (with, presumably, negligible thickness). Using Eq. 29-17,
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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