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10th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    How many times does the current in the appliance change direction in 10 revolution by an AC generator is connected to an electric appliance?

    A) 10 times

    B) 50 times

    C) 100 times

    D)  20 times

    E)  None of these

    Correct Answer: D

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