In the figure, the curved part represents arc of a circle of radius `x`. If it carries a current `I` then the magnetic field at the point `O` is

Shown in the figure is a conductor carrying a current i. the magnetic field at the origin is :

Shown in the figure is a conductor carrying a current i. the magnetic field at the origin is :

A semicircular arc of radius 20 cm carries a current of 10 A. Calculate the magnitude of magnetic field at the center of the arc.

A semicircular arc of radius 20 cm carries a current of 10 A calculates the magnitude of magnetic field at the centre of the arc.

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 current i is flowing in a conductor PQRST shaped as shown in the figure. The radius of curved part QRS is r and length of straight portions PQ and ST is very large. The magnetic field at the centre O of the curved part is -

A current i is flowing in a conductor PQRST shaped as shown in the figure. The radius of curved part QRS is r and length of straight portions PQ and ST is very large. The magnetic field at the centre O of the curved part is -