A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held above the center of the coil with its south pole downward. The magnet is released from rest and falls toward
The coil. As viewed from above, what is the direction of the current induced in the coil as the
Magnet approaches the coil?
A) clockwise
B) counterclockwise
C) No current is induced in the coil.
D) An emf but no current is induced in the coil.

Question

Quizplus · Accepted Answer

According to Lenz's law, the direction of the induced current in the coil will be such that it opposes the change that caused it. As the south pole of the magnet approaches, the coil will induce a current that creates a north pole on its top side to repel the approaching south pole. When viewed from above, this induced current direction is clockwise.

A Circular Coil of Copper Wire Is Lying Flat on a Horizontal