Question

If a wire had a current which was continually reversing directions, and then was placed between the poles of a magnet, what would happen to the force on the wire?

Answer 1

The force would change direction repeatedly. The force on a wire with a current in a magnetic field depends on the direction of the current. When the current is in one direction, the force would act downward. When the current is in the opposite direction, the force on the wire would act upward.