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12th Class Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank MCQ - Current Electricity

  • question_answer
    The conductivity of a metal decreases with the increase in temperature on account of:                 (CBSE 2020)

    A) decrease in number density of electrons

    B) decrease in resistivity

    C) decrease in relaxation time

    D) increase in mean free path

    Correct Answer: C

    Solution :

    (c) decrease in relaxation time


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