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Define electrical resistivity....

Define electrical resistivity.

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(i) The electrical resistivity of a material is defined as the resistance of a conductor of unit length and unit area of cross section.
(ii) Its unit is ohm metre.
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Knowledge Check

  • The electrical resistivity drops to zero for _______

    A
    conductors
    B
    insulators
    C
    super conductors
    D
    semiconductors

  • The electrical resistivity of silicon at room temperature is ________ .

    A
    `2300 kOmegam`
    B
    `2.3 k Omegam`
    C
    `0.46 k Omega m`
    D
    `0.46 xx 10^(-3) k Omegam`

  • The electrical resistivity of a thin copper wire and a thick copper wire are respectively P_(1) Omega m P_(2) Omega m. then

    A
    `P_(1) gt P_(2)`
    B
    `P_(2) gt P_(1)`
    C
    `P_(1) = P_(2)`
    D
    `(P_(1))/(P_(2))`

    • Similar Questions

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    Define electrical conductivity.

    The reciprocal of electrical resistivity of a material is called its ___________.

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    Define electric flux .

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