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Q.

Is it true that A strong magnetic field produced inside a solenoid can be used to magnetize a piece of magnetic material like soft iron  when placed inside the solenoid. The magnet so formed is called electromagnet.


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a

True

b

False 

answer is A.

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Detailed Solution

If Electric current is passed through a simple magnet wound with a coil of insulated wire and the magnetic field is produced the magnet formed by this process is called Electromagnet. The core of the magnet which is wound with the wire is made of ferromagnetic or ferromagnetic materials such as iron.
   
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