EOC_Solution_28_17 - 28.17. Solve: (a) The current density...

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28.17. Solve: (a) The current density is J I A I R == = () [] π 2 1 2 2 7 173 10 0.85 A 0.00025 m ±A/m 2 . (b) The electron current, or number of electrons per second, is
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