Electric Bell Demonstration Model
Product Code : SCL-PLE-11676
Quick Answer: The Electric Bell Demonstration Model is an open-frame bell with soft iron electromagnets, a spring-steel armature, an adjustable contact screw and a metal gong, run from 3–6 V DC through binding posts.
Last updated: 18 October 2026
Key Features
- Open frame shows every working part of an electric bell.
- Electromagnet coils of insulated copper wire on soft iron cores.
- Adjustable contact screw and spring-steel armature form the make-and-break.
- Metal gong struck by a hammer.
- Non-conductive base with binding posts for a 3–6 V DC supply.
Technical Specifications
| Specification | Value |
|---|---|
| Electromagnet | Insulated copper wire wound on soft iron cores |
| Contact breaker | Adjustable contact screw with spring-steel armature |
| Sounder | Metal gong and hammer |
| Base | Non-conductive, with binding posts |
| Supply | 3–6 V DC |
How It Is Used
When the supply is switched on, the electromagnet pulls the armature so the hammer hits the gong. That movement opens the contact at the screw, the magnet switches off and the spring returns the armature, closing the circuit again. The cycle repeats rapidly, showing how electrical energy becomes sound through a self-interrupting circuit.
Frequently Asked Questions
What supply does the Electric Bell Demonstration Model need?
It works on low-voltage DC from 3 to 6 V, connected at the binding posts on the base.
Why does the Electric Bell Demonstration Model keep ringing?
The armature breaks the circuit at the contact screw each time it is pulled in, then springs back to remake it, so the hammer strikes the gong over and over.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related electromagnetism apparatus:
- Electromagnet Kit
- Electromagnet ‘U’ shape
- Magnetic Effect of Current
- Fire Alarm Model
- Battery Eliminator
Institutions and distributors in Montenegro, Libya, Lesotho, Dominican Republic and Qatar can request an export quotation for the Electric Bell Demonstration Model.
For a quotation on the Electric Bell Demonstration Model, contact JLab India on +91-8569909696.
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