At a particular instant, an electron moves toward the east in a uniform magnetic field that is directed straight downward. The magnetic force that acts on it is

Question

Quizplus · Accepted Answer

The direction of the magnetic force on a moving charge in a magnetic field is given by the right-hand rule. Since the electron is moving east (right) and the magnetic field is downward, the force on a negative charge (electron) will be toward the south, opposite to the direction predicted by the right-hand rule for a positive charge.

At a Particular Instant, an Electron Moves Toward the East