You are facing a circular wire carrying an electric current. The current is clockwise as seen by you. Is the field at the centre coming towards you or going away from you?

A very long bar magnet is placed with its north pole coinciding with the centre of a circular loop carrying an electric current. i . The magnetic field due to the magnet at a point on the periphery of the wire is B . The radius of the loop is a . The force on the wire is

A wire carries an alternating current i=i_0sinomegat . In there an electric field in the vicinity of the wire?

A circular loop of radius 4.0 cm is placed in a horizontal plane and carries an electric current of 5.0 A in the clockwise direction as seen from above. Find the magnetic field (a) at a point 3.0 cm above the centre of the loop (b) at a point 3.0 cm below the centre of the loop.

A square loop of wire of side a carries a current i . Calculate the magnetic field at the centre of the loop

A circular loop of one turn carries a current of 5.00 A. If the magnetic field B at the centre is 0.200 mT, find the radius of the loop.

A wire of length l is bent in the form of an equilateral triangle and carries an electric current i. (a) Find the magnetic field B at the centre. (b) If the wire is bent in the form of a square, what would be the value of B at the centre?

Identify the valid statement from the following What are you coming home?

The magnetic field at the centre of a circular coil carrying current I-ampere is B. If the coil bent into smaller circular coil of n turns, its magnetic field at the centre is B. The ratio between B’ and B is:

A circular loop of radius r carries a current i. where should a long , straight wire carrying a current 4i be placed in the plane of the circle so that the magnetic field at the centre becomes zero?

A long straight wire carries a current of 35 A . What is the magnitude of the field B at a point 20 cm from the wire ?