A current is flowing through a thin cylindrical shell of radius `R`. If energy density in the medium, due to magnetic field, at a distance `r` from axis of the shell is equal to `U` then which of the following graphs is correct

A long cylinder wire of radius R carries a unifrom current I flowing through it. The varaiaiton of magnetic field with distance 'r' from the axis of the wire is shown by .

Current flows through a straight, thin-walled tube of radius r. The magnetic field at a distance x from the axis of the tube has magnitude B.

Current flows through a straight, thin-walled tube of radius r. The magnetic field at a distance x from the axis of the tube has magnitude B.

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is B_0 The distance from the axis, where magnetic field is 1.5 B_0 is (current density is uniform)

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is B_0 The distance from the axis, where magnetic field is 1.5 B_0 is (current density is uniform)

Current flows through a straight cylindrical conductor of radius r. The current is distributed uniformly over its cross-section. The magnetic field at a distanace x from the axis of the conductor has magnitude B:

A spherical shell of radius R has a charge +q units. The electric field due to the shell at a point

A spherical shell of radius R has a charge +Q units. The electric field due to the shell at a point

If current flowing through shell of previous objective is equal to i , then energy density at a point distance 2R from axis of the shell varies according to the graph

Consider a thin spherical shell of radius R consisting of uniform surface charge density sigma . The electric field at a point of distance x from its centre and outside the shell is