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  3. 12th Class
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  5. Electro Magnetic Induction

12th Class Physics Electro Magnetic Induction Question Bank Case Based (MCQs) - Electromagnetic Induction

  • question_answer
    A closed iron ring is held horizontally and a bar magnetic is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

    A) equal to g

    B) less than g

    C) more than g

    D) depends on the diameter of the ring and length of magnet.

    Correct Answer: B

    Solution :

    Acceleration of the magnet will not be equal to g. It will be less than g. This is because, as the magnet falls, amount of magnetic flux linked with the ring changes. An induced emf is developed in the ring which opposes the downward motion of the magnet.


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