working of electrical bell
step by step (point wise)
class 7
Answers
The electromagnet in an electric bell will create a magnetic field that attracts the iron clapper towards it. The clapper strikes the gong (bell). When the clapper strikes the gong, the current stops flowing through the circuit. This causes the electromagnet to lose its magnetic field.
Answer:
See diagram from Google ......
Construction: It is made of an electromagnet, bell(metallic cup), soft iron strip(which works as a hammer) and contact screw. The bell is a cup-shaped device made of metal. A soft iron strip works as a small hammer.
An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. When an electric current flows through the coils, the rods become magnetic and attract a piece of iron attached to a clapper. The clapper hits the bell and makes it ring.
Current flow through an electro magnetic coil pulls on an arm which converts it to mechanical energy. This movement opens the contacts on an electrical switch which opens and causes the current to stop flowing.
Important parts of an electric bell are :
- Electromagnet.
- Armature.
- Spring.
- Armature rod.
- Hammer.
- Gong.
An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. ... When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell.