Quick Answer:The Ring Launcher Model is a jumping-ring demonstration of electromagnetic induction: a conducting metal ring sits on a copper solenoid coil, and when a low-voltage AC current is switched on the induced current makes the ring jump upward.
Last updated: 18 October 2026
Key Features
Copper solenoid coil on an insulated base with a metal ring.
Classic jumping-ring experiment for electromagnetic induction.
Demonstrates Lenz’s Law and induced current.
Shows electrical energy turning into mechanical motion.
Technical Specifications
Specification
Value
Coil
Copper solenoid coil
Ring
Metal conducting ring
Base
Insulated base
Components
Solenoid coil, conducting ring, power connection setup
Power requirement
Low-voltage AC supply
How It Is Used
The apparatus is set on a stable surface with the ring placed over the top of the coil and the coil connected to a low-voltage AC supply. Switching on the current creates a changing magnetic field that induces a current in the ring and launches it upward. Use the recommended voltage and run it under supervision.
Frequently Asked Questions
What power supply does the Ring Launcher Model need?
A low-voltage AC supply connected to the coil. Use the recommended voltage and operate it under supervision.
Which principles does the Ring Launcher Model demonstrate?
Electromagnetic induction and Lenz’s Law: the changing field of the coil induces a current in the ring, which makes the ring jump upward.
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