The configuration of some current carrying wires is shown in figure-4.217. All straight wires are very long. Both AB and CD are arcs of the same circle, both subtending right angles at the centre 0. The magnetic field at O is:

Two very long wires carrying equal current i are bent and arranged as shown in figure. Both AB and CD are arcs of the same circle, both subtending right angles at the centre O. The magnetic field at O is:

The wire loop shown in figure carries a current as shown. The magnetic field at the centre O is ,

The wire loop shown in figure carries a current as shown. The magnetic field at the centre O is ,

A long current carrying wire is bent as shown. The magnetic field induction at O is

The straight wire AB carries a current I . The ends of the wire subtend angles theta_1 and theta_2 at the point P as shown in figure. The magnetic field at the point P is

The straight wire AB carries a current I . The ends of the wire subtend angles theta_1 and theta_2 at the point P as shown in figure. The magnetic field at the point P is

Consider a current carrying wire shown in the figure. If the radius of the curved part of the wire is R and the linear parts are assumed to be very long, then the magnetic induction of the field at the point O is

A metallic wire carrying a current I is bent into the form as shown in the figure. The circular portion ABC of the wire is of radius r and the straight portion AC subtends an angle 2theta at the centre O. Find the magnetic field due to the conductor at point O. If the radius of the curved path is r, find the magnetic field at the centre O.

If the piece of wire 25 cm long is bent into an arc of a circle subtending an angle of 75^(@) at the centre , then the radius of the circle ( in cm ) is :