Physics, asked by Agnibesh57581, 11 months ago

Difference between electromagnet and permanent magnet 0

Answers

Answered by sahu22
6

Permanent (Bar) Magnet :-

*They are permanently magnetized

*These are usually made of hard materials.                                    

*The strength of the magnetic field line is constant i.e. it cannot be varied.

*The poles of a Permanent magnet cannot be changed.

*Example of a permanent magnet is a Bar Magnet

Electromagnet :-

*These are temporarily magnetized.

* They are usually made of soft materials.

 *The strength of the magnetic field lines can be varied according to our need.

 *The poles of an electromagnet can be altered.

*Example of a temporary magnet is solenoid wounded across a nail

and connected to a battery

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Answered by Anonymous
4

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


⇒ The permanent 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 permanent 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 permanent magnets cannot be changed.

⇒ The polarity of the electromagnets can be changed.


⇒ The permanent magnet is generally made of hard iron.

⇒ The electromagnets are generally made of soft iron.

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