Question

A difference between bar magnet
and electromagnet?

Answer 1

electro magnet can change their polariti by appli reversed current while bar magnet not

Answer 2

The differences between bar magnet and electromagnet are as follows :-

⇒ The bar magnet does not have electric current flow through it.

⇒ Electromagnets are made by passing electric current through it.

⇒ The strength of the magnetic field in bar magnets cannot be changed.

⇒ The strength of the electromagnets can be changed by changing the amount of current in the magnet.

⇒ The direction of the magnetic field cannot be changed.

⇒ The direction of magnetic field can be changed in electromagnets.

⇒ The polarity of bar magnets cannot be changed.

⇒ The polarity of the electromagnets can be changed.

⇒ The bar magnet is generally made of hard iron.

⇒ The electromagnets are generally made of soft iron.