PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
Sequence the steps to show the working of an electric bell.
 
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Answer variants:
A contact screw is placed near the iron strip so that current flows through it.
At the end of an iron strip, a hammer is placed.
The circuit breaks and the current flow is stopped when the coil pulls the iron strip.
Thus, the coil is no longer an electromagnet and hence, it does not attract the iron strip.
Again, the iron strip touches the contact screw when it reaches its original position, thus completing the circuit.
This process is repeated again and again and makes the bell ring.
Thus, the coil becomes an electromagnet and pulls the iron strip such that the hammer strikes the gong of the bell.
An iron piece is wounded with a coil of wire which acts as an electromagnet.
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