A hollow cylindrical wire of inner radius a and outer radiu

Last updated: 6/8/2023

A hollow cylindrical wire of inner radius a and outer radiu b carries current i as shown in figure If the current density is uniform across its cross section the magnetic field at point P such that a r b is b a Hoi r a 2 b a r Moir 2 b a Hoiab 27 b a r