Question

Which one of the following current flows in the gap between the capacitor plates?

(a) Displacement current

(b) Conduction current

(c) Resistive current

(d) Total current

The question was asked by my college director while I was bunking the class.

I want to ask this question from Displacement Current in division Alternating Current of Physics – Class 12

Answer 1

The correct answer is (a) Displacement current

To elaborate: Displacement current (ID) is the electric current that flows in the gap between the plates of the capacitor during its charging, which originates due to the time-varying electric field in the space between the two plates of the capacitor. The expression for displacement current is given as:

ID = εo \(\frac {d\Phi_{\varepsilon}}{dt}\)