Which of the following figure correctly depicts the Lenz’s law. The arrows show the movement of the labelled pole of a bar magnet into a closed circular loop and the arrows on the circle show the direction of the induced current

Options

A.
B.
C.
D.

Answer

A

Explanation

When the north pole of a bar magnet moves towards the coil, the induced current in the coil flows in a direction such that the coil presents its north pole to the bar magnet as shown in Fig. (a).
Therefore, the induced current flows in the coil in the anti-clockwise direction. When the north pole of a bar magnet moves away from the coil, then the induced current in the coil flows in a direction such that the coil presents its south pole to the bar magnet as shown in Fig. (b).

Therefore, induced current flows in the coil in the clockwise direction.