Circular regiions `(1)` and `(2)` have current densities J and `-J` respectively, such that their region of intersection carries no current. Magnetic field in their region intersection is

If vec(j) and vec(E ) are current density and electric field respectively inside a current carrying conductor , then correct relation is

If vec(j) and vec(E ) are current density and electric field respectively inside a current carrying conductor , then correct relation is

Electric field (E) and current density (J) have relation

Electric field (E) and current density (J) have relation

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current l. The current l is uniformly distributed across this cross-section. Calculate the magnetic field in the region r lt a and r gt a

Figure shows a long straight wire of a circular cross - section (radius a) carrying steady current I. The current I is uniformly distributed across this cross - section . Calculate the magnetic field in the region r lt a and r gt a

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current l. The current l is uniformly distributed across this cross-section. Calculate the magnetic field in the region r lt a and r gt a

What is the magnitude of the Torque on a current coil placed in a unifrom magnetic field region.

A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is