10th Class Science Magnetic Effects of Electric Current Question Bank Magnetic Effects of Electric Current

  • question_answer
    Direction: Read the passage carefully and answer the following question.
    In the given diagram, when the magnet is pushed into the solenoid, the pointer of the galvanometer deflects slightly to the left.
    Which of the following changes would cause the pointer to deflect through a larger angle?

    A) Move the magnet faster.

    B) Move the magnet away from the solenoid.

    C) Unwind some of the turns of the solenoid.

    D) Keep the magnet stationary.

    Correct Answer: A

    Solution :

    On moving the magnet faster, the change in net magnetic field associated with the solenoid will be more and hence more e.m.f. will be induced.


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