PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoHow does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram.
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At the end of an iron strip, a hammer is placed.
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.
The circuit breaks and the current flow is stopped when the coil pulls the iron strip.
An iron piece is wounded with a coil of wire which acts as an electromagnet.
A contact screw is placed near the iron strip so that current flows through it.
Again, the iron strip touches the contact screw when it reaches its original position, thus completing the circuit.
Thus, the coil is no longer an electromagnet and hence, it does not attract the iron strip.
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