Q.
A parallel plate capacitor of capacitance 20μF is being charged by a voltage source whose potential is changing at the rate of 3 V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively
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a
zero, zero
b
zero, 60μA
c
60μA,60μA
d
60μA, zero
answer is C.
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Detailed Solution
Here, C=20μF Therateofchangeofpotential =3 V/s Thechargeonthecapacitor, Q=CV ∴ dQdt=ID=CdVdt=20μF×3 V s=60μA Displacementcurrentisequaltotheconductioncurrent.
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