RAJASTHAN ­ PET Rajasthan PET Solved Paper-2012

  • question_answer
    If a metallic block had no potential difference applied across it, then the average velocity of free electrons in it

    A)  zero

    B)  proportional to T

    C)  proportional to\[\sqrt{T}\]

    D)  finite but independent of temperature

    Correct Answer: A

    Solution :

     In the absence of external electric field, the motion of electrons in the conductor is random such that the average velocity of electrons becomes zero.


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