Question Detail

PHY 102 ELECTROSTATICS Objective Question

Question

What is the electric field inside a conductor that is in electrostatic equilibrium?
Options
A Uniform and directed towards the center.
B Non-uniform and strongest at the edges.
C Zero, as any field would cause electrons to move.
Correct Answer
D Constant and equal to the surface charge density.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 18 states, 'There cannot be an electrostatic field inside a conductor if it is already at electrostatic equilibrium. This is because if there were to be such a field, then the electrons inside the conductor will move, negating electrostatic equilibrium.'

Hint

If charges can move freely, they will rearrange until there is no net force on them within the conductor.

Question Info