Solve this one
Dear student,
consider another rod without cavity and with same uniform current as in original situation, and a rod of radius 'a' with same uniform current density but current in opposite direction. These two rods when arranged like original figure would produce equivalent rod with cavity.
Regards.
consider another rod without cavity and with same uniform current as in original situation, and a rod of radius 'a' with same uniform current density but current in opposite direction. These two rods when arranged like original figure would produce equivalent rod with cavity.
Regards.