Consider a ????cable which consists of an inner wilre of radius `a` surrounded by an outer shell of inner and outer radii `b` and `c` respectively. The inner wire caries a current `I` and outer shell carries an equal and opposite current. The magnetic field at a distance `x` from the axis where `bltxltc` is

Consider a co axial cable which consists of an inner wilre of radius a surrounded by an outer shell of inner and outer radii b and c respectively. The inner wire caries a current I and outer shell carries an equal and opposite current. The magnetic field at a distance x from the axis where bltxltc is

Consider a coaxial cable which consists of an inner wire of radius a surrounded by an outer shell of inner and outer radii b and c respectively. The inner wire carries an electric current (i_0) and the outer shell carries an equal current in opposite direction. Find the magnetic field at a distance x from the axis where b.

Consider a coaxial cable which consists of an inner wire of radius a surrounded by an outer shell of inner and outer radii b and c respectively. The inner wire carries an electric current i_0 and the outer shell carries an equal current in opposite direction. Find the magnetic field at a distance x from the axis where (a) xlta, (b) altxltb , (c) bltxltc and (d) xgtc . Assume that the current density is uniform in the inner wire and also uniform in the outer shell.

Consider a coaxial cable which consists of an inner wire of radius a surrounded by an outer shell of inner and outer radii b and c respectively. The inner wire carries an electric current (i_0) and the outer shell carries an equal current in opposite direction. Find the magnetic field at a distance x from the axis where (a) xlta, (b) altxltb, (c) bltxltc and (d)xgtc. Assume that the current density is uniform in the inner wire and also uniform in the outer shell.

A coaxial cable consists of an inner wire of radius 'a' surrounded by an outer shell of inner and outer radii 'b' and 'c respectively. The inner wire carries an electric current i_(0). which is distributed uniformly across cross-sectional area. The outer shell carries an equal current in opposite direction and distributed uniformly. What will be the ratio of the magnetic field at a distance x from the axis when (i) x lt a and (ii) a lt x lt b ?

A metal sphere of radius R carrying charge q is surrounded by a thick concentric metal shell of inner and outer radii a and b respectively. The net charge on the shell is zero. The potential at the centre of the sphere, when the outer surface of the shell is grounded will be

Find the magnetic dipole moment of the spiral of total number of turns N , carrying current i having inner and outer radii a and b respectively.

Find the magnetic dipole moment of the spiral of total number of turns N, carrying current I having inner and outer radii v and b respectively