Question

magnetic lines of force represent

Answer 1

The magnetic field of a magnet is represented by equidistant parallel lines called magnetic lines of force. The magnetic line of force may be defined as the path along which the north pole of compass needle moves. 

Answer 2

Hey Friend 

The lines around the magnet represents the magnetic field of a magnet .
Magnetic Field flows from North to South inside the magnet and south to North inside the magnet.

Magnetic Field means a region around a magnet within which the force of magnetism acts.

Hope It Helps