Question:

The current density Jinside a long solid cylindrical wire of

Last updated: 6/7/2023

The current density Jinside a long solid cylindrical wire of

The current density Jinside a long solid cylindrical wire of radius a 5 30 mm varies with radial distance r from centre the according to J Jor2 a where Jo 220A m Find the magnitude of the magnetic field at a r a 2 b r 2a Hint In a culinder dA 2rrdr