21. (a) At any instant the displacement current idin the gap between the plates equals the conduction current iin the wires. Thus id= i= 2.0 A. (b) The rate of change of the electric field is dEdtAddtiAEd=FHGIKJ==×=×⋅−12085 101023 1000012211εΦ...A8FmmVmschbg(c) The displacement current through the indicated path is
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