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 wire of length 10cm is bent into an arc of a circle such that it subtends an angle of 1 radian at the centre. If a current of 1A is passed through the wire, the magnetic induction at the centre of the circle will be

A wire of length 'L' is bent in to an arc of a circle and found to subtentd and angle of 'theta' radians at the centre.If a current of 'I' is passed through it, the magnetic induction at the center of the circle is

A current I ampere flows in a circular area of wire which subtends an angle of 3pi//2 radians at the centre whose radius is R. find an expression for magnetic induction B at the centre.

If the arc of a circle of radius 60 cm subtends and angle 2/3 radian at its centre , then the length of the arc will be

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.

The radius of a circle whose arc of length 20pi subtends an angle of (2pi)/3 radians at the centre is:

A current i ampere flows in a circular arc of wire whose radius is R , which subtend an angle 3pi//2 radian at its centre. The magnetic induction B at the centre is

A current i ampere flows in a circular arc of wire whose radius is R , which subtend an angle 3pi//2 radian at its centre. The magnetic induction B at the centre is

A current i ampere flows in a circular arc of wire whose radius is R , which subtend an angle 3pi//2 radian at its centre. The magnetic induction B at the centre is