A coil is carrying current in a clockwise direction . It is equivalent to which magnetic pole ?

A wire carrying current i is shaped as shown . Section AB is a quarter circle of radius r . The magnetic field is directed

Two concentric circular coils X and Y of radii 16 cm and 10 cm respectively, lie in the same vertical plane containing the north to south direction. Coil X has 20 turns and carries a current of 16A, coil Y has 25 turns and carries a current of 18A. The direction of the current in X is anticlockwise and is clockwise in Y, for an observer looking at the coils facing west. Give the magnitude and direction of the net magnetic field due to the coils at their centre.

Find the direction of magnetic field due to a current-carrying circular coil held : [i] Vertically in north-south plane and an observer looking at it form east sees the current to flow in an anticlockwise direction [ii] Vertically in east-west plane and an observer looking it from south sees the current to flow in an anticlockwise direction . [iii] Horizontally and an observer looking at it from below sees current to flow in the clockwise direction.

A square coil OPQR of side 'a' carrying a current I, is placed in the Y-Z plane as shown here. Find the magnetic moment associated with the coil.

Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1 A. What is the magnitude of the magnetic field at the centre of the coil?