12th Class Physics Electro Magnetic Induction Question Bank Assertion And Reason (MCQs) - Electromagnetic Induction

  • question_answer
    Assertion: The direction of induced e.m.f. is always such as to oppose the change that causes it.
    Reason: The direction of induced e.m.f. is given by Lenz's law.

    A) If both assertion and reason are true and reason is the correct explanation of assertion.

    B) If both assertion and reason are true and reason is not the correct explanation of assertion.

    C) if assertion is true but reason is false.

    D) If both assertion and reason are false.

    E) If assertion is false but reason is true.

    Correct Answer: B

    Solution :

    According to Lenz's law when magnet is moved towards the coil, the direction of the induced current is such that the coil repels magnet and when the magnet moves away from the coil, the coil attracts the magnet.


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