MAGNETISATION OF MATERIALS

How can we magnetise(convert) magnetic materials to a magnet?

Magnetic materials can be magnetised by rubbing them with a magnet continuously repeatedly in the same path without changing the position of the magnet and the material. 

SUSCEPTIBILITY

The ability of magnetic substances to get magnetised under the influence of a magnetic field is called susceptibility 

RETENTIVITY

The ability of a magnetic substance to retain the magnetism that it acquired is called retentivity

PERMEABILITY

The ability of a substance to pass the magnetic lines of force through them is called permeability