Question

what is resistivity?write its unit

Answer 1

Answer:

Resistance of a conductor of unit lenght and having unit cross-section area.

It's SI unit is ohm m...

Hope you can understand..

Answer 2

Answer:

Resistivity definition: The electrical resistivity is the electrical resistance per unit length and per unit of cross-sectional area at a specified temperature. The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m). It is commonly represented by the Greek letter ρ, rho.