JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Different Measuring Instruments

  • question_answer
    Constantan wire is used in making standard resistances because its                         [MP PET 1999]

    A)                    Specific resistance is low 

    B)                    Density is high

    C)                    Temperature coefficient of resistance is negligible

    D)                    Melting point is high

    Correct Answer: C

    Solution :

                 Due to the negligible temperature co-efficient of resistance of constantan wire, there is no change in it's resistance value with change in temperature.


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