. Explain the construction and working of electric bell with figure


Best Answer

Explanation:

DIAGRAM OF ELECTRIC BELL

electric bell with figure

CONSTRUCTION OF ELECTRIC BELL

The components of electric bell are as follows:

  • Electromagnet is a copper wire that is wound around an iron piece which acts as a magnet when current flows through it.
  • Striker is in touch with contact screw through an iron strip.
  • A metal gong
  • A key or switch

WORKING OF AN ELECTRIC BELL

  • When the switch is ON and the screw is in contact with the iron strip, then electric current flows through the copper wire which gets magnetised because of electromagnetism. 
  • The magnetised copper wire (or electromagnet) attracts the iron strip towards it, letting the striker hit the gong and then the sound is produced.
  • As soon as the striker hits the gong, the screw loses its contact with the iron strip and thus, current stops in the circuit.
  • At this point, the electromagnet loses its magnetism and the iron strip moves back and comes in contact with the contact screw.
  • The electric current is then restored in the circuit and again the striker hits the gong by the above process.
  • This action repeats itself and the bell rings.



 

 

 

 

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