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Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectromagnetic Induction

A bar magnet is shifted along the axis of a copper ring positioned far from the magnet. When viewed from the magnet's side, an anticlockwise current is observed to be induced in the ring. Which of the following might be true?

Options

  1. AThe north pole faces the ring while the magnet moves away from it.
  2. BThe south pole faces the ring while the magnet moves away from it.
  3. CThe north pole faces the ring while the magnet moves towards it.
  4. DThe south pole faces the ring while the magnet moves towards it.

Correct answer

C. The north pole faces the ring while the magnet moves towards it.

Step-by-step solution

When viewed from the magnet's side, the induced current in the ring is anticlockwise. This implies that the face of the copper ring towards the magnet behaves as a North pole. According to Lenz's law, the direction of the induced current is such that it opposes the change in magnetic flux that produces it. If the magnet is moving towards the ring, the induced North pole must repel the approaching magnet to oppose its motion. Therefore, the North pole of the magnet must be facing the ring. If the magnet is moving aw

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