Punjab Medical Punjab - MET Solved Paper-2011

  • question_answer
    Which of the following can cause the null point of a potentiometre to shift beyond the wire?

    A)  Shorter length of wire

    B)  Longer length of wire

    C)  Low\[emf\]of auxiliary battery

    D)  High\[emf\]of auxiliary battery

    Correct Answer: C

    Solution :

    Null point of a potentiometer can shift beyond the wire if the potential gradient along the potentiometer wire decreases which is possible by having low emf of auxiliary battery.


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