The current density is a solid cylindrical wire a radius R, as a function of radial distance
Channel: Doubtnut
Date: 2020-05-17

The current density is a solid cylindrical wire a radius R, as a function of radial distance r is given by  `J(r )=J_(0)(1-(r )/(R ))` . The total current in the radial regon r = 0 to `r=(R )/(4)` will be :