A vertical bar magnet is dropped through the center of a horizontal loop of wire, with its north pole leading. At the instant when the midpoint of the magnet is in the plane of the loop, the induced current at point P, viewed from above, is:
A) maximum and clockwise
B) maximum and counterclockwise
C) not maximum but clockwise
D) not maximum but counterclockwise
E) essentially zero

Question

Quizplus · Accepted Answer

At the midpoint, the magnetic flux through the loop is changing at its slowest rate, so the induced current is essentially zero.

A Vertical Bar Magnet Is Dropped Through the Center of a Horizontal