Question

The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of the induced current will be:

Options

• clockwise when magnet is above and below the ring.

• anticlockwise when magnet is above and below the ring.

• anticlockwise when magnet is above the ring and clockwise when the magnet is below the ring.

• clockwise when magnet is above the ring and anticlockwise when the magnet is below the ring.

Answer 1

anticlockwise when magnet is above the ring and clockwise when the magnet is below the ring.

Explanation:

We apply the clock Simpson rule and determine the polarity as seen by the observer. A rotates in an anticlockwise direction when positioned above, and in a clockwise direction when situated below the coil.