ch26-p062 - 62. (a) Since P = i2 R = J 2 A2 R, the current...

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62. (a) Since P = i 2 R = J 2 A 2 R , the current density is () ( ) ( ) 2 52 3 11 1 . 0 W / 3.5 10 m 2.0 10 m 5.0 10 m 1.3 10 A/m . PP P J AR A LA L A ρρ −− == = = π×Ω × × (b) From
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