Question

Why should electrostatic field be zero inside a conductor?

Answer 1

Step 1: Electric Field

1. An electric field (E) is a force (F) created by a charge (q) in close proximity to its surroundings.
2. Its expression is $F=qE$.

Step 2: Electrostatic field inside a conductor

1. Electric field is due to charge but there is no charge inside the conductor, all the charge is on the surface.
2. So, Electrostatic field inside a conductor is zero and this is known as electrostatic shielding.

Hence, electrostatic field inside a conductor is zero because there is no charge inside the conductor.