A solid spherical conductor is given a net nonzero charge. The electric potential of the conductor is

A) largest at the center

B) largest at the surface

C) largest somewhere between the center and the surface

D) constant throughout the volume.

Solution: The electric field inside a conductor (or any shape) must be zero, otherwise electrons will move until equilibrium is reached. The electric field strength is the slope of the electric potential. A slope of zero indicates a constant value for the electric potential.