📐 Electric Bell Diagram for Class 7

An electric bell uses an electromagnet to repeatedly pull a metal striker against a bell, creating a ringing sound. This model labels the coil, armature, and contact points that make it work.

Why It's Important

• Demonstrates electromagnetism in a simple, visible device
• Shows how electrical current can create movement
• Used as a foundation for understanding more complex devices
• Illustrates a self-repeating electrical circuit

Observation Points

• Trace the circuit from the switch to the electromagnet
• Notice how the armature moves toward the coil
• Identify the contact point that breaks the circuit
• Consider why the bell rings continuously

Learning Objectives

• Identify the main parts of an electric bell
• Explain how the electromagnet attracts the armature
• Describe why the bell rings continuously
• Understand the underlying principle of electromagnetism

Summary

An electric bell's self-breaking circuit repeatedly pulls its armature and striker toward an electromagnet, ringing continuously for as long as the switch is pressed.