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The electrical conductivity of metal dec...

The electrical conductivity of metal decreases with rise in temperature, while that of a semiconductor increases. Explain

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Electrical conductivity of metal decreases with rise of temperature. Because on heating the positive ions of the metal atoms start vibrating and produce hinderance in the flow of electrons. The electrical conductivity of semiconductors increases with increase in temperature because more electrons can jump to the conduction band
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Knowledge Check

  • The conductivity of metals increases with:

    A
    Increase in temperature
    B
    decrease in temperature
    C
    No change ovserved
    D
    Increase then decrease

  • With the increase in temperature, the resitance of semiconductors

    A
    Decreases
    B
    Increases
    C
    Remain same
    D
    None of these

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