RAJASTHAN PMT Rajasthan - PMT Solved Paper-1998

  • question_answer
    Which is the best device to measure e.m.f. of a cell:

    A)  Voltmeter         

    B)         Voltmeter         

    C)         Ammeter          

    D)         Potentiometer

    Correct Answer: D

    Solution :

    The best device to measure the e.m.f. of a cell is potentiometer, because it does not take any current from the cell whose e.m.f. is to be measured.


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