How is an electromagnet different from a bar magnet?
Answers
bar magnet strength depends upon the material used in its creation. The strength of an electromagnet can be adjusted by the amount of electric current allowed to flow into it. As a result, the same electromagnet can be adjusted for different strength levels.
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.