Lenz's Law Apparatus
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Product Code : SCL-PLE-11587
Quick Answer: The Lenz’s Law Apparatus carries two metal loops, one closed and one with a break, on a balanced central pivot, so that moving a magnet towards or away from them shows that an induced current opposes the change that causes it.
Last updated: 18 October 2026
Key Features
- Closed and open loops side by side for direct comparison.
- Central pin lets the loops rotate freely in the horizontal plane.
- Non-magnetic base.
- Large enough for whole-class demonstration.
- Supplied ready to use.
Technical Specifications
| Specification | Value |
|---|---|
| Loops | 2: one closed, one open (with a break) |
| Loop material | High-conductivity metal |
| Base | Non-magnetic |
| Mounting | Central pin for free horizontal rotation |
| Supplied | Pre-configured, ready to use |
How It Is Used
Pushing a magnet into the closed loop makes the loop swing away; pulling it out makes the loop follow. The open loop does not respond, because no current can circulate around the break. The contrast shows that the induced current in the closed loop sets up a field opposing the change in magnetic flux.
Frequently Asked Questions
Why does the Lenz’s Law Apparatus have an open loop?
The open loop has a break, so no induced current can flow in it and it stays still when a magnet moves nearby. Comparing it with the closed loop, which swings away or follows the magnet, shows that the movement comes from the induced current.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related electromagnetic induction apparatus:
- Ring Launcher
- Eddy Current Model (Disc Type)
- Eddy Current Apparatus
- Faraday’s Law Apparatus
- Induced Current Apparatus
For a quotation on the Lenz's Law Apparatus, contact JLab India on +91-8569909696.
