Electrostatic Equilibrium Quiz

What is the condition of the electric field inside an isolated conductor in electrostatic equilibrium?

• It is zero everywhere inside.

• It is non-zero only at the surface.

• It is maximum at the center.

• It varies with distance from the center.

Why do excess charges reside on the surface of a conductor?

• To maximize energy.

• To minimize energy.

• Because of repulsive forces.

• Due to attractive forces.

What is the orientation of electric field lines outside a conductor in electrostatic equilibrium?

• Randomly oriented.

• At a 45-degree angle to the surface.

• Perpendicular to the surface.

• Parallel to the surface.

In the given problem, what is the charge on the inner surface of the hollow sphere?

• Positive 4 nano coulombs.

• Negative 7 nano coulombs.

• Negative 4 nano coulombs.

• Positive 7 nano coulombs.

What is the total charge on the outer surface of the hollow sphere in the problem?

• Positive 11 nano coulombs.

• Negative 11 nano coulombs.

• Positive 7 nano coulombs.

• Negative 7 nano coulombs.