Define magnetic lines of force and state its two properties.

The definition of the magnetic field is -
. "A magnetic force line is a line that represents the magnetic field that exists next to a magnet."
Let's understand the concept of a magnetic field by looking at the following image. The dotted line is the magnetic field outside the magnet, and the solid arrow is the magnetic field inside the magnet.
These lines indicate the presence of magnetic fields other than magnets. The strength of the lines of magnetic force is the same everywhere and corresponds to the proximity of the lines. The magnetic fields can be determined by the density of these magnetic fields.
These are two important aspects of the magnetic field lines.
(a) Magnetic force lines ending in the northern to southern hemisphere of the conversation. However, the magnetic field inside the magnet begins at the South Pole and ends at the North Pole. Therefore, the magnetic field closes the loop.
(b) Increasing the distance between the poles reduces the density of the magnetic force lines. The magnetic field depends on the vibration of the magnetic field. Find the magnetic flux, that is, the acting force of the magnet. A magnet can be thought of as a magnetic dipole with the north and south poles separated by a certain distance. The longer the distance, the larger the magnetic field.