Question

Define electrical conductivity of a conductor and give its S.I. unit.

Answer 1

The reciprocal of resistivity (p) of a material is called its electrical conductivity \((\delta),\)

i.e. \(\delta=\frac{1}{p}\)

SI unit of conductivity is mho m^-1(or siemen m^-1)

It depends upon number density, nature of material, relaxation time and temperature.