Quick Answer: Electric Bell Working Model is an electromagnetism demonstration model that shows how an electromagnet, armature, striker and make-and-break contact produce repeated ringing on a low-voltage DC 3 V–6 V supply.
Last updated: October 2026
Key Features
Operates on low-voltage DC 3 V–6 V
Visible electromagnet, armature, striker, terminals and make-and-break contact
Shows the magnetic effect of electric current as a repeating ring cycle
Also listed as Electric Bell Demonstration Model
Technical Specifications
Specification
Value
Operating voltage
Low-voltage DC 3 V–6 V
Working principle
Electromagnet attracts the armature, moves the striker, opens the contact and repeats the ringing cycle
Visible parts
Electromagnet, armature, striker, terminals and make-and-break circuit
About This Product
When current flows through the coil, the core is magnetised, the armature is pulled in and the striker hits the gong; this opens the contact, the current stops, the armature springs back and the cycle starts again. As an Electrical And Electronics demonstration, it lets students trace current through a working low-voltage circuit and name the electrical, magnetic, mechanical and sound energy changes in each cycle.
Frequently Asked Questions
Q1. What voltage does the Electric Bell Working Model use? It is referenced for low-voltage DC operation in the 3 V–6 V range. Use only an approved low-voltage DC supply and do not touch the contact points or terminals while the circuit is switched on.
Q2. How does the make-and-break contact keep the bell ringing? The magnetised core pulls the armature and striker towards the gong, which opens the contact and cuts the current. The armature then returns, the contact closes again and the cycle repeats while the supply stays connected.
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