Question

what is resistivity? state its unit​

Answer 1

Answer:

Resistivity is defined as the resistance offered by a unit length of conductor having unit area of cross-section . Its S.I. unit is ohm-meter. It does not change with the increase in length of wire but resistance becomes 4 times on stretching the wire to twice its length.

Answer 2

answer -Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section.

So it SI unit will be

ρ= RA / l