Question

what are magnetic field lines ? how is direction of magnetic field at a point in a magnetic field determined using field lines

Answer 1

A magnetic field line is the path along which a free north-pole tends to move. The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point.

Answer 2

Explanation:

an area around a magnet or materials that behave like a magnet, where there is a force that will attract some metals towards it