P32_033 - 33. (a) We use B · ds = µ0 Ienclosed to find B...

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Unformatted text preview: 33. (a) We use B · ds = µ0 Ienclosed to find B = = µ0 Ienclosed µ0 (Jd πr2 ) 1 = = µ0 Jd r 2πr 2πr 2 1 2 −6 (1.26 × 10 H/m)(20 A/m )(50 × 10−3 m) = 6.3 × 10−7 T . 2 (b) From id = Jd πr2 = ε0 dΦE dE = ε0 πr2 dt dt we get 2 V dE 20 A/m Jd = = = 2.3 × 1012 . −12 F/m dt ε0 8.85 × 10 m·s ...
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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