P27_060 - 60. (a) The current is i = = V V V d2 = = R L/A...

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60. (a) The current is i = V R = V ρL/A = πV d 2 4 ρL = π (1 . 20 V)[(0 . 0400 in . )(2 . 54 × 10 2 m / in . )] 2 4(1 . 69 × 10 8 · m)(33 . 0m) =1 . 74 A . (b) The magnitude of the current density vector is ¯ ¯ ¯ ~ J ¯ ¯ ¯ = i A = 4 i πd 2 = 4(1 . 74 A) π [(0 . 0400 in . )(2 . 54 × 10
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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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