A copper wire of diameter `0.65mm` carries a current of `2.3 mu A` ,then find the maximum magnitude of the magnetic field due to this current.

A copper wire of diameter 1.6 mm carries a current of 20A. Find the maximum magnitude of the magnetic field (vec B)due to this current.

A copper wire of diameter 1.6 mm carries a current of 20A. Find the maximum magnitude of the magnetic field (vec B) due to this current.

Consider a 10-cm long piece of a wire which carries a current of 10A . Find the magnitude of the magnetic field due to the piece at a point which makes an equilateral triangle with the ends of the piece.

A circular coil of wire consisting of 100 turns each of radius 9 cm carries a current of 0.4 A. The magnitude of the magnetic field at the centre of coil is [ mu_(0) = 1256 xx 10^(-7) Sl unit]

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

Figure shows a straight wire of length a carrying a current I . What is the magnitude of magnetic field induction produced by the current at P, which is lying at a perpendicular distance a from one end of the wire.

Copper has one conduction electron per atom. Its density is 8.89 g//cm^3 and its atomic mass. 63.54 g//mol . If a copper wire of diameter 1.0 mm carries a current of 2.0 A , what is the drift speed of the electrons in the wire?

A long, cylindrical wire of radius b carries a current i distributed uniformly over its cross section. Find the magnitude of the magnetic field at a point inside the wire at a distance a from the axis.

A straight wilre of diameter 0.5 mm carrying a current 2A is replaced by another wire of diameter 1 mm carrying the same current. The strength of magnetic field at a distance 2 m away from the centre is

a straight wire current element is carrying current 100 A as shown in figure. the magnitude of magnetic field at a point P.