Unformatted text preview: 70. (a) With cylindrical symmetry, we have, external to the conductors, B= µ 0 ienc
2π r which produces ienc = 25 mA from the given information. Therefore, the thin wire must
carry 5.0 mA.
(b) The direction is downward, opposite to the 30 mA carried by the thin conducting
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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.
- Spring '08