Physics Form 5: Chapter 2 - Electric Bell (Application of Electromagnet)

• When the switch is pressed, a current flows through the solenoids and the electromagnets attract a soft-iron plate.
• The striker hits the gong and a sound is produced.
• The movement of the soft-iron plate breaks the contact and the circuit is cut off.
• The electromagnet loses its magnetism and the striker springs back to original position.

Click on the diagram below to play!