A long cylindrical conductor of cross-sectional area A and radius a is made of material whose
Channel: Doubtnut
Date: 2020-08-16

A long cylindrical conductor of cross-sectional area A and radius a is made of material whose resistivity depends only on a distance r from the axis of conductor, given by `rho = c/r^(2)`, where c is a constant. Find the resistance per unit length of the conductor and the electric field strength due to which a current I flows in it.