Question

cn anyone gv me a very short description of magnetic field line wch is very easy..... plzz friends be fst

Answer 1

Magnetic field lines or lines of force are the imaginary lines introduced by Michael Faraday (1791-1867) to visualize magnetic field. Lines of force are graphical representation of a field. The lines of force are the path along which an isolated unit North Pole would move along in the field.

Answer 2

The lines drawn in a magnetic field along which a north magnetic pole would move are called magnetic field lines.
The magnetic field lines always begin from North pole and end on South pole of a magnet.