
Electric bell
Electric bell
- When the switch is closed, current flows through the circuit and the core become magnetized
- The iron armature is attracted towards the magnetized core causing hammer to hit the gong and produce sound but this breaks the contact and the circuit.
- When the circuit is broken, the iron core loses magnetism releasing the armature to be returned to the contact by the spring.
- Again the circuit is completed and the process repeats, the hammer making repeated sound.
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CATEGORIES A- Magnetism
TAGS Dr. Bbosa Science
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