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.

A long round conductor of cross-sectional area A is made of a material whose resistivity depends only on the distance r from the axis of the conductor as p=alpha/r^2 where a is alpha constant. Find (a) the resistance per unit length of such a conductor, (b) the electric field strength in the conductor due to which a current I flows through it.

A long round conductor of cross-sectional area S is made of material whose resistivity depends only on a distance r from the axis of the conductor as rho=alpha//r^(2) , where alpha is a constant. Find the total resistance per unit length of the rod when potential difference is applied across its length.

A solid cylinder of length l and cross-sectional area A is made of a material whose resistivity depends on the distance r from the axis of the cylinder as rho = k//r^(2) where k is constant . The resistance of the cylinder is -

The cross section of a cylindrical conductor is A. The resistivity of the material of the cylinder depends only on distance r from the axis of the conductor as rho=k/r^2 where k is a constant. Find the resistance per unit length of such a conductor.

A long cylindrical conductor of radius R carries a current i as shown in the figure. The current density J varies across the cross-section as J = kr^(2) , where, k is a constant. Find an expression for the magnetic field B at a distance r (lt R) from the axis

A long cylindrical conductor of radius R carries a current i as shown in the figure. The current density J varies across the cross-section as J = kr^(2) , where, k is a constant. Find an expression for the magnetic field B at a distance r (lt R) from the axis