What is magnetism?

magnetism is a branch of physics which involves magnets

in magnetism we study about the interaction of particles with magnets , basically the magnetic field .magnetic field is an area around a magnet where a paramagnetic material experiences a force . it is not necessary that only a bar magnet or some other typeof magnets exhibit the magnetic field . a current carrying conductor also have a magnetic field . Light also have a magnetic field , you will study it in graduation.