Question

what is meant by resistivity? what are the unit of its measurement

Answer 1

In general, the resistance to electric current of a material. In particular, the degree to which a material resists the flow of electricity or heat. The reciprocal of conductivity. SI unit (electricity): ohm-metre (Ω-m)

Answer 2

The property of conductor that quantifies how strongly a given material opposes the flow of electric current.

It is measured in OHM Ω