In this problem, we're told that the bar magnet is pushed towards the center of the wire loop.
For easy reference, let's label our figures as:
According to Lenz's law, when a changing magnetic flux generates an emf, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the changes that produced it.
The bar magnet is pushed toward the center of a wire loop. (View is 3D, slightly from above.) In which of the two situations is there (A) a clockwise induced current in the loop, (B) a counterclockwise induced current in the loop, or (C) no induced current in the loop?
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Lenz's Law concept. You can view video lessons to learn Lenz's Law. Or if you need more Lenz's Law practice, you can also practice Lenz's Law practice problems.