The current in a wire is directed along the x axis in a uniform magnetic field that is directed along the negative x axis. The force on the wire is along the
A) x axis.
B) -y axis.
C) z axis.
D) There is no force on the wire.

Question

Quizplus · Accepted Answer

The force on a current-carrying wire in a magnetic field is given by the cross product of the current direction and the magnetic field direction. When both are parallel or antiparallel, as in this case, the cross product is zero, meaning there is no force on the wire.

The Current in a Wire Is Directed Along the X