A circular segment of radius `20cm` subtends an angle of `60^@` at its centre. Figure A current of `10A` is flowing through it. Find the magnitude and direction of the magnetic field produced at the centre.

A circular arc of wire of radius of curvature r subtends an angle of p/4 radian at its centre. If i current is flowing in it then the magnetic induction at its centre is -

A circular conductor of radius 5cm produces a magnetic field of 7times10^(-6)T at its centre. The current flowing through the conductor is: ?

If a long horizontal conductor is bent as shown in figure and a current I is passed in it, find the magnitude and direction of magnetic field induction at the centre of circular part.

On increasing the current through a solenoid, the magnetic field produced by it at its centre.

A wire of length L is bent around in the form of a coil having N turns of same radius . If a steady current I flows through it in a clockwise direction, find the magnitude and direction of the magnetic field produced at its centre.

A straight wire is used ot form a semi-circular wire of radius 2cm. IF a current I=10A is passing through the wire,then find the magnitude and direction of magnetic induction at the centre of the semicircle.

In a circle of radius 21 cm, an arc subtends an angle of 60^@ at the centre. Find area of the segment formed by the corresponding chord.

An electric current of I ampere is flowing in a long conductor CG as shown in figure. Find the magnitude and direction of magnetic induction at the centre O of circular part.

A current path shaped as shown in figure produces a magnetic field at P , the centre of the arc. If the arc subtends an angle of 30^@ and the radius of the arc is 0.6 m , what are the magnitude and direction of the field produced at P if the current is 3.0 A .