How is an electromagnet different from a permanent magnet class 10?
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We can easily demagnetise electromagnet but we can not easily demagnetise permanent magnet.
Polarity of electromagnet can be changed but polarity of permanent. magnet can't be changed.
We can increase strength of electromagnet but we can't increase strength of permanent magnet.
HOPE THIS WILL HELP YOU.
Polarity of electromagnet can be changed but polarity of permanent. magnet can't be changed.
We can increase strength of electromagnet but we can't increase strength of permanent magnet.
HOPE THIS WILL HELP YOU.
Answered by
0
Hey !!
An electromagnet of a core made of a ferromagnetic material placed inside a solenoid. It behaves like a strong magnet when the current flows through the solenoid and effectively loses its magnetism when the current is switched off.
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