Question

define electric resistivity​

Answer 1

Explanation:

Resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. High resistivity designates poor conductors

Answer 2

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The electrical resistivity of a material is defined as the resistance offered to current flow by a conductor of unit length having unit area of cross section

The unit of ρ is ohm−m(Ωm)

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