STANDARDPhysics-Electromagnetic Waves
STANDARD Physics Displacement Current MCQ Question
Type: MCQ-numerical-Hard-Class 12
The charge on a parallel plate capacitor varies as q = q₀ cos 2πνt. The plates are very large and close together (area = A, separation = d). The displacement current through the capacitor is
A
q₀ 2πν sinνt
B
−q₀ 2πν 2sinνt
C
q₀ 2π sinνt
D
q₀ πν sin2νt
Correct Answer
Option B
Detailed Explanation
Displacement current = conduction current. Therefore, dq/dt = d/dt [q₀ cos2πνt] = −q₀ 2πν sin2πνt.
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