2) A bar magnet is held vertically with the N pole up and the S pole down The ma

Question

2) A bar magnet is held vertically with the N pole up and the S pole down The magnet is dropped through a loop of wire in the horizontal plane. As viewed from above, what is the direction of the induced current as the magnet approaches the coil from above and as it leaves the coil from below? A) The direction is CW (clockwise) as it approaches the loop and CW as it leaves the loop. B) It is CcW C) The direction CW as it approaches the loop and CCW as it leaves the loop. (counter clockwise) as it approaches the loop and CCW as it leaves the loop. D) The direction CCW as it approaches the loop and CW as it leaves the loop.

Explanation / Answer

from the lenz law, the conservation of energy says that to prevent any change the current directs in such a way that it resists external magnetic field changes.

So the correct option is B.it is CCW as it approaches the loop and CCW as it leaves the loop

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