A bar magnet is falling through a loop of wire with constant velocity.The north pole enters first.As the south pole leaves the loop of wire,the induced current (as viewed from above)will be
A)clockwise.
B)counterclockwise.
C)zero.
D)along the length of the magnet.

Question

Quizplus · Accepted Answer

As the south pole leaves the loop, the magnetic flux through the loop decreases, inducing a current that opposes this change. According to Lenz's Law, the induced current will be clockwise to create a magnetic field that opposes the decrease in flux.

A Bar Magnet Is Falling Through a Loop of Wire