The current density varies radical distance r as `J=ar^(2)`, in a cylindrical wire of radius R. The current passing through the wire between radical distance `R//3 and R//2` is,

The current density varies with radial distance r as J=ar^(2) in a cylindrical wire of radius R. The current passing through the wire between raidal distance R//3 and R//2 is

The current density varies with radial distance 'r' as j= a r^(2) in a cylindrical wire of radius R. The current passing through the wire between radial distance (R )/(3) and (R )/(2) is

The current density in a wire of radius a varies with radial distance r as J=(J_0r^2)/a , where J_0 is a constant. Choose the incorrect statement.

A cylindrical wire if radius R = 2 mm is of uniform area of cross-section. The current density through a cross-section varies with radial distance r as J = ar^(2) , where a =3.2 xx 10^(11)A//m^(2) and r is in metres. What is the current through the outer portion of the wire between radial distances R//2 and R?

Electric current is passing unfiormly through a solid cylinderical wire of radius R. The current I passing through circular cross-section of radius r measured from the axis of the cylinder (r lt R ) varies as shown in