Question

What are permanent magnet and electro magnet and give two uses of each.

Answer 1

Electromagnet-a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
uses for electromagnet:
1.) Electromagnet are used in all kinds of electric devices including hard disks,speakers etc.
2...they r even used in MRI machines which utilize magnets to take photos of your insides

Answer 2

permanent magnet is made of ferromagnetic material, which is magnetised by a strong external magnetic field.
In an electromagnet the magnetic field is created through electric current in a wire wound coil and strengthened by a soft iron core.
Electromagnet uses :-1 ) used in hard disk
2) used in generators to produce current.
Permanent magnet uses :- 1) used in automobiles.
2) used in magnetic screwdrivers to attract the screws