Question

Displacement current goes through the gap between the plates of a capacitor when the charge on the capacitor

• A. is changing with time
• B. decreases
• C. does not change
• D. decreases to zero

Answer 1

The correct option is A is changing with time

Displacement current is given by

$i_d={ϵ}_0\frac{d{\varphi }_E}{dt}$

${\varphi }_E$ is the flux inside the capacitor.

Up to the time the electric Flux changes, there will be a displacement current. This is possible when the charge on the capacitor changes.

Therefore, displacement current goes through the gap between plates of the capacitor when the charge of the capacitor or electric field increases or decreases inside the capacitor.
So, the correct option is $A$