Question

Define magnetic field. Why two magnetic field lines can never cross ewach other. Dra magnetic field lines due to circular current carrying coil.

Answer 1

A magnetic field is generated when electric charge carriers such as electrons move through space or within an electrical conductor.

THE two magnetic field lines can never intersect each other because two tangents can be drawn from that point of intersection which will give two directions of the field from the same point,which is impossible.So, the two magnetic field lines can never intersect each other