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Electromagnet

Bar Magnet or Permanent Magnet

It is a temporary magnet

It is a permanent magnet

They are usually made of soft materials

They are usually made of hard materials

It can produce very strong magnetic force

It produces comparatively weak magnetic force

It's magnetic strength can be changed

It's magnetic strength can not be changed

It's polarity can be changed.

It's polarity can not be changed.

Example - Solenoid - A wire wound across a nail connected to a battery

Example - Bar Magnet

 

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo