The electric bell: Figure shows a simple electric bell. It consists of an electromagnet, an armature, a contact adjusting screw, A gong and hammer. The armature consists of a soft iron rod mounted on a spring. One end of the iron rod presses against the top of the contact adjusting screen.
When the switch is pressed on, current flows in the electromagnet. It then attracts the iron rod towards itself, causing the hammer to strike the gong. At the same time, the armature loses contact with the screw and the current is switched off. This causes the electromagnet to lose its magnetism and the armature springs back to its original position to close the circuit once again. Current flows again and the cycle repeats itself till the current is switched off.
Answers & Comments
Answer:
The electric bell: Figure shows a simple electric bell. It consists of an electromagnet, an armature, a contact adjusting screw, A gong and hammer. The armature consists of a soft iron rod mounted on a spring. One end of the iron rod presses against the top of the contact adjusting screen.
When the switch is pressed on, current flows in the electromagnet. It then attracts the iron rod towards itself, causing the hammer to strike the gong. At the same time, the armature loses contact with the screw and the current is switched off. This causes the electromagnet to lose its magnetism and the armature springs back to its original position to close the circuit once again. Current flows again and the cycle repeats itself till the current is switched off.
Answer:
Sure! I'd be happy to help you with that.
An electric bell consists of several key components, including a power source, an electromagnet, a metal armature, a spring, and a gong or bell.
Here's how it works:
1. When the electric current flows through the circuit, it reaches the electromagnet.
2. The electromagnet becomes magnetized, creating a magnetic field around it.
3. The metal armature, which is connected to a spring, is attracted to the electromagnet due to the magnetic field.
4. As the armature is pulled towards the electromagnet, it breaks the circuit, interrupting the flow of current.
5. When the circuit is broken, the electromagnet loses its magnetism, and the spring pulls the armature back to its original position.
6. As the armature moves back, it reconnects the circuit, allowing the current to flow again.
7. This process repeats rapidly, causing the armature to vibrate back and forth.
8. The vibration of the armature strikes the gong or bell, producing the ringing sound that we hear.
This cycle continues as long as the electric current is supplied to the bell, resulting in the continuous ringing or chiming sound.
I hope this explanation helps you understand the working of an electric bell! Let me know if you have any more questions.