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 current carrying wire AB of the length L is turned along a circle, as shown in figure. The magnetic field at the centre O.

A circular coil of a wire containing 100 turns each of radius 2cm carries a current of 0.20A. The magnetic field at the centre of the coil is…..

Assertion: Electric field inside a current carrying wire is zero. Reason: Net charge on the current carrying wire is non zero.

The magnetic field at the centre of ring carrying electric current is ____ of area of the ring.

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

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?

A compass needle is placed near a current - carrying straight wire . State your observation for the following case and give reason for the same in each case : (1) Direction of electric current in the wire is increased . (2) Magnitude of electric current in the wire is increased . (3) Teh compass needle is displaced away from the straight wire .

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current I. The current I is uniformly distributed across this cross-section. Calculate the magnetic field in the region r a.

Consider a circular loop of wire lying in the plane of the table . Let the current pass through the loop clockwise . Apply the Right-hand thumb rule to find out the direction of the magnetic field inside and outside the loop.