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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
    Two identical circular coils A and B are kept in a horizontal tube side by side without touching each other. If the current in the coil A increases with time, in response, the coil B

    A) is attracted by A

    B) remains stationary

    C) is repelled

    D) rotates

    Correct Answer: C

    Solution :

    When current in coil A increases with time, there will be a change of flux in coil B which will induce a current in B. Now, according to Lenz's law, the direction of induced current in B will be opposite to the direction of current in A. Thus, if two loops carry current in opposite direction they will repel each other.


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