Q112 / 180 · NEET 2019 (All India) · Physics

A parallel plate capacitor of capacitance 20 μF is being charged by a voltage source whose potential is changing at the rate of 3 V s-1. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor would be, respectively:

  • A
    zero, 60 μA
  • Correct answer
    B
    60 μA, 60 μA
  • C
    60 μA, zero
  • D
    zero, zero

Solution

q=CV
dqdt=Cdvdt
=20×10-6×3
Conduction current =60 μA
Displacement current =ε0dϕedt
=ε0AddVdt
=60 μA

Hence, the correct answer is option: 'B'.

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