A conducting wire is in the shape of a regular hexagon, which is inscribed inside an imaginary circle of radius R. A current / flows through the wire. The magnitude of the magnetic field at the center of the circle is

A conducting wire carrying current I is shown in the figure. The magnitude of magnetic field at the point P will be

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is :

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is

A conducting wire carrying a current I is bent into the shape as shown. The net magnetic field at the centre O of the circular arc of radius R

A symmetric star shaped conducting wire loop is carrying a steady state current I as shown in the figure. The distance between the diametrically opposite vertices of the star is 4a. The magnitude of the magnetic field at the center of the loop is

A current of I amperes is flowing through each of the bent wires as shown. Find the magnitude of magnetic field at O.

The magnetic field at the origin due to the current flowing in the wire is

The magnetic field at the origin due to the current flowing in the wire is

A current of 2 amp. flows in a long, straight wire of radius 2 mm . The intensity of magnetic field on the axis of the wire is

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is