Question

Under normal conditions capacitors have _______

(a) Displacement current

(b) Conduction current

(c) Both conduction and displacement current

(d) Neither conduction nor displacement current

The question was posed to me in final exam.

I want to ask this question from Displacement Current in a Dielectric topic in portion Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

The correct choice is (a) Displacement current

The explanation: Under normal conditions capacitors contain an insulating material called dielectric sandwiched between the plates of the capacitor. Since insulators can carry only an electric field but not moving carriers, therefore normally a capacitor has displacement current and not conduction current.