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12th Class Physics EM Waves Question Bank MCQs - Electromagnetic Waves

  • question_answer
    From Maxwell's hypothesis, a changing electric field gives rise to

    A) An electric field

    B) An induced emf 

    C) A magnetic field

    D) A magnetic torque.

    Correct Answer: C

    Solution :

    Option [c] is correct Explanation: A changing magnetic field induces an electromotive force (emf) and, hence, an electric field. The direction of the emf opposes the change. The third Maxwell’s equations is Faraday's law of induction, and includes Lenz's law.


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