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Discussion :: Materials and Components

  1. Electrical conductivity of metals expressed in ohm-1 m-1 is of the order of

    2. A.
    1010
    B.
    105
    C.
    10-4
    D.
    10-6

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    Answer : Option B

    Explanation :

    Conductivity is reciprocal of resistivity. Since resistivity of metals is around 10-7 ohm-m, conductivity is about 107 ohm-1 m-1. So 105 is the nearest value.

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