Question

The potential difference between the plates of a parallel plate capacitor is charging at the rate of 10⁶ Vs^–1. If the capatance is 2μF . The displacement current in the dielectric of the capacitor will be 

(A) 4A 

(B) 3A 

(C) 2A 

(D) 1A

Answer 1

The correct option is (C) 2A.

Explanation:

Id = displacement current and Id = (Aε_o / d) ∙ (dv / dt) = c ∙ (dv / dt)

Given (dv / dt) = 10⁶V/s      &        c = 2μF

Hence

Id = 2 × 10^–6 × 10⁶ = 2A