A bar magnet is held above the center of a wire loop lying in the horizontal pla

Question

A bar magnet is held above the center of a wire loop lying in the horizontal plane, as shown in the figure below The south end of the magnet is toward the loop. After the magnet is dropped, what is true of the current in the resister as viewed from above? (a) it is always clockwise as the magnet falls through the loop. (b) It is always counterclockwise as the magnet falls toward the loop. (c) It is first clockwise as the magnet approaches the loop and counter clockwise after it has passed through the loop. (e) It is first clockwise as the magnet approaches the loop and then clockwise after it has passed through the loop.

Explanation / Answer

Option a is correct for this problem.

Because, when bar magnet moving towards the coil,current direction is clockwise according to right hand rule and Lenz's law. And when it passes through the coil then also same directon. As in first case south pole is towards coil and in second case North pole is moving away. So situation is sme. Thats why option a is correct.

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