Passing current through a magnet

[Ynsgfnsv]

I think magnet has to be a conductor of electricity if is made of iron or steel. So, What happens when we pass a direct current through a magnet? What if we pass through AC? Does the passage of current effect the strength of the magnet?

 

[singhvi]

The residual magnetism of a bar of iron,etc. is due to the current due to the electrons' movement around the atom, (the bound current), the induced current (free current) will produce a magnetic field that will be superimposed on the magnetic field due to the bound current and you will observe this superimposed magnetic field (AC or DC). Only thing is that a DC applied current and hence a non-oscillating magnetic field might change the residual magnetism of the material