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difference between a bar magnet and an electro magnet

Bar magnets are permanent magnets and will never looses their magnetism. They are always switched on. The orientation of the poles remains fixed. 

Electromagnets are temporary magnets and work only when an electric current is passing through it. The orientation of the poles depends upon the direction of the current.

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Electromagnets are non permanent magnets. They got magnetic field because of applied electric field. They lost their magnetic field which was around that, when the applied electric field is stopped. permanent magnets have magnetic property always with it.

Permanent magnetic property loses when we heat the material. It cannot be regained once again.
But electromagnets are capable of regaining its magnetic properties.

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