The magnetic force on an electric charge at rest
A) must be zero.
B) may be zero or nonzero.
C) must be nonzero.
D) A magnetic force on an electric charge is a contradiction of terms.

Question

Quizplus · Accepted Answer

The magnetic force on a stationary electric charge is always zero because the magnetic force is dependent on the velocity of the charge relative to the magnetic field. If the charge is not moving, there is no magnetic force acting on it.

The Magnetic Force on an Electric Charge at Rest