Punjab Medical Punjab - MET Solved Paper-1999

  • question_answer
    In case of a semi-conductor, which of the following statement is wrong?

    A)  At absolute zero temperature, it behave like a conductor

    B)  Resistivity is in between that of a conductor and insulator.

    C)  Doping increases conductivity

    D)  Temperature coefficient of resistance is negative

    Correct Answer: C

    Solution :

    Temperature coefficient of semi-conductor is negative with the rise of temperature. At absolute zero it behaves as an ideal insulator not a conductor.


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