Draw the variation of magnetic field(B) with magnetic intensity(H) when ferromagnetic material is subjected to a cycle of magnetisation.

Draw the magnetic field lines around a bar magnet.

Give the expression for total magnetic flux associated with the magnetic material subjected to the magnetising field.

What will be the dimensions of the ratio of electric intensity of the electric field E to the magnetic induction B of the magnetic field in case of electromagnetic wave propagation ?

Four particles-proton, electron, alpha, and neutron-enter a region of constant magnetic field with same velocities. The magnetic field is perpendicular to the velocity . A] Which particle [s] are not be deflected by the magnetic field ? B] Which particle [s] are deflected by the magnetic field ? C] Which particle experiences maximum force ? Justify .