Question

what do you mean by resistivity? derive R=row×L/A​

Answer 1

Answer:

Resistivity, commonly symbolized by the Greek letter rho 'p' is quantitatvely equal to the resistance 'R' of a spicemen such as a wire multiplied by a cross sectional area A and divided by its length 'l ; 'p=RA/l.

The unit of resistance is ohm.