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  3. 10th Class
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10th Class Science Sample Paper Science Olympiad Model Test Paper-15

  • question_answer
    An electric iron of resistance 25 ohm takes a current of 4 A. Calculate the heat developed in 2 minutes.

    A) 40 kJ

    B) 48 kJ

    C) 32 kJ

    D) 42 kJ

    E) None of these

    Correct Answer: B

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