Assertion (A): A magnet remains stable, If it aligns itself with the field
Reason (R): The P.E. of a bar magnet is minimum, if it is parallel to magnetic field.
Magnetic lines of force are:
In case of a bar magnet, lines of magnetic induction
Out of dia, para and ferromagnetism, the universal property of all substances is
The relative permeability is represented byμr and susceptibility is denoted by χ for a magnetic substance then for a paramagnetic substance.
Ferromagnetic ore properties are due to
Permanent magnets are made from