Quick Answer: Electric Bell Demonstration Model mounts an electromagnet, striker (hammer), gong, contact screw and terminals on a base board in an open structure, showing the make-and-break action of an electric bell on a low voltage DC supply of 3V to 6V.
Last updated: October 2026
Key Features
Electromagnet, striker, gong, contact screw and terminals pre-mounted on a base board
Open structure keeps the working parts visible
Runs on low voltage DC, 3V to 6V
Metal parts and copper coil on a wooden or ABS base
When the terminals are connected to a 3V to 6V DC supply, current through the coil turns the iron core into an electromagnet that pulls the armature, so the hammer strikes the bell; the contact then breaks, the armature returns and the cycle repeats as continuous ringing. Teachers use this Physics Miscellaneous Products model to explain make-and-break circuits.
Frequently Asked Questions
Q1. What voltage does the Electric Bell Demonstration Model use? A low voltage DC supply of 3V to 6V.
Q2. Does the model need assembly? No. It comes pre-assembled with the parts mounted on the base board.
Q3. Why does the bell keep ringing? Each time the hammer strikes, the contact breaks and stops the current; the armature returns to its original position and the cycle repeats rapidly.
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