Write characteristics of bar magnet and an electromagnet
Answers
Electromagnet :-
* they are made up of soft metals
* we can easily increase and decrease its power according to us
* in electromagnet we use electricity to generate magnetic field
Bar magnet :-
* they are made up of hard metals
* we can increase and decrease its strength according to us
* they can easily lose their magnetic power
* in this electricity is not needed
I think this sufficient for you
The characteristics of 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.