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  3. 10th Class
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10th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    A rectangular coil of copper wire is rotated in a magnetic field. The direction of induced current changes once in each:

    A) Two revolutions

    B) Half revolution

    C) One revolution

    D) One-fourth revolution

    E) None of these

    Correct Answer: B

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