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Increase in temperature decreases the co...

Increase in temperature decreases the conductivity of metallic conductors. Give a reason.

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Being more electropositive in nature, metals have a tendency to lose their valence electrons. Due to the presence of these free electrons metals act as good conductors. But increase in temperature increases the vibrations of metal kernels in the metal lattice. Increase in the vibrations obstructs the path of the electrons that in turn increases the resistance of the metal. Therefore, the conductivity decreases.
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Knowledge Check

  • With increase in temperature the electrical conduction of metallic conductor

    A
    increases
    B
    decreases
    C
    remains the same
    D
    changes irregularly

  • With increse in temperature, the conductivity of a conductor

    A
    remains same
    B
    decreases
    C
    increases
    D
    may increase or decrease

  • (A): With increase in temperature the conductivity of metals decreases. (R): With increase in temperature lattice vibrations increase in metals. 2.4xx10^(24) atoms.

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true and R is not the correct expalantion of A
    C
    A is correct R is wrong
    D
    A is wrong R is correct

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    On increasing temperature, conduction in metallic conductors ______

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