Question

What is the role of insulation with a capacitor?

a.) It moves charge through the capacitor

b.) It prevents moving charges between plates

c.) It decreases storage capacity between the plates

d.) It reverses the direction of the magnetic field

Answer 1

What is the role of insulation with a capacitor?

Aans- b. It prevents moving charges between plates.

Insulating layer between the two plates of a capacitor is commonly called dielectric. Due to this DC current can't flow through the capacitor.

Once the capacitor reaches it steady state condition, an electric current is unable to flow through the capacitor itself and around the circuit due to the insulating properties of the dielectric used to seperate the plates.