CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it

    A)  increases, thermal velocity of the electron decreases

    B)  decreases, thermal velocity of the electron decreases

    C)  increases, thermal velocity of the electron increases

    D)  decreases, thermal velocity of the electron increases

    Correct Answer: D

    Solution :

    With rise in temperature the thermal velocity of the electron increases. Relaxation time and hence drift velocity will decrease.


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