A circular coil of radius `R` carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance `r` from the centre of the coil, such that `r gtgt R`, varies as

A circular coil of radius R carriers an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance r from the centre of the coil, such that rgt gtR , varries as

A circular coil of n turns and radius r carries a current I. The magnetic field at the center is

A circular coil of 100 turns has a radius of 10 cm and carries a current of 5A. Calculate the magnetic field (a) at the centre of the coil (b) at a point on the axis of the coil at a distanceof 5cm from the centre of the coil.

A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is

A circular coil of radius 5 cm has 169 turns carries a current of 2.6 A . The magnetic induction at a point on the axis at a distance of 12 cm from the centre of the coil is

A circular coil of radius r carries a current I. The magnetic field at its centre is B. At what distance from the centre, on the axis of the coil the magneitc field will be B/27 ?

A circular coil of radius R carries a current i . The magnetic field at its centre is B . The distance from the centre on the axis of the coil where the magnetic field will be B//8 is