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Q.

Is it true that an electric bell is switched on when a soft iron strip attracts the electromagnet?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
An electromagnet is a magnet in which by passing an electric current through a coil surrounding it, a magnetic field is produced. Only when an electric current is running through the coil, the electromagnet forms a magnetic field around it when the electric bell is switched on. The soft iron attracts it as it is a magnetic material.
 
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Is it true that an electric bell is switched on when a soft iron strip attracts the electromagnet?