NEET2019Physics-Electromagnetic Waves
NEET 2019 Physics Displacement Current MCQ Question
Type: MCQ-numerical-Medium-Class 12
A parallel plate capacitor of capacitance 20 μF is being charged by a voltage source whose potential is changing at the rate of 3V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively:
A
60 μA, zero
B
Zero, zero
C
Zero, 60 μA
D
60 μA, 60 μA
Correct Answer
Option D
Detailed Explanation
The conduction current is given by I = C(dV/dt) = 20 × 10⁻⁶ * 3 = 60 μA. The displacement current is equal to the conduction current in a capacitor circuit, so it is also 60 μA.
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