Question

A long straight wire carries a current creating magnetic field. A positive charge is moving parallel to the wire with the direction opposite to the current. The force exerted by the magnetic field on the charge is directed:

A. Parallel to the wire, the same direction as the current;

B. Parallel to the wire, direction opposite to the current;

C. Perpendicular to the wire, toward it;

D. Perpendicular to the wire, away from it;

E. There is no magnetic force at this configuration.

Answer 1