Lenz’s Law
Product Code : LSK-PL-10339
Lenz’s Law (SKU LSK-PL-10339) is an open and closed loop demonstration device for electromagnetic induction. Passing a magnet through the complete loop makes the device move, while the split loop stays still, so students see that an induced current, and the force it produces, needs a closed path. It serves Class 12 and college physics teaching. Science Lab Supplies manufactures the device itself, and its Plot 448, HSIIDC Industrial Area unit in Saha, Ambala quotes schools, colleges, tender contractors and distributors without a middleman.
Specifications
The rows below set out each feature of this open and closed loop device. In short, a complete loop and a split loop are carried side by side: a magnet moved through the closed loop induces a current that opposes the change, and the device moves; the same movement through the split loop gives no response.
| Specification | Value |
|---|---|
| SKU | LSK-PL-10339 |
| Type | Open and closed loop demonstration |
| Loops | One complete (closed) loop and one split (open) loop |
| Closed loop | Device moves when a magnet passes through |
| Split loop | No movement occurs |
| Topics | Faraday’s law of induction, Lenz’s law |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Lenz’s Law Apparatus
The device gives a visible, mechanical proof that induced currents oppose the change that causes them. Comparing the closed and split loops isolates the role of a complete circuit, so it fits an electricity and magnetism lab kit for schools and a physics lab equipment list for Class 11 and 12.
- NCERT Class 12 physics, electromagnetic induction: Faraday’s laws and Lenz’s law, followed by mutual induction on the Demonstration Transformer Model.
- Showing Lenz’s law as a consequence of conservation of energy.
- Class 10 and 12 magnetic effects of current: contrasting induction with the current-driven lifting force of the Electromagnet Set.
- B.Sc. electricity and magnetism: introductory demonstration before quantitative induction work.
Standard Scope of Supply
The Lenz’s Law device is supplied as a single unit carrying the closed and split loops described above. A magnet is needed to run the demonstration; if your laboratory does not already have a suitable one, a bar magnet pair can be added as a separate line on the quotation.
Packing, MOQ and Lead Time
Whether you need a single demonstration unit or one for each practical group, the quotation lists packing, delivery time and price for your exact quantity. Coils, galvanometers and magnets for the rest of the induction topic can be priced on the same quote.
Science Lab Supplies is a registered exporter holding an Importer-Exporter Code and is able to ship to buyers in Iraq, Nigeria, Kenya, Ghana, Ethiopia and Tanzania. To price an induction bench, describe it in a message on the contact page or collect the items in the enquiry cart; the lab tender page covers sealed bids.
Frequently Asked Questions
Why does only the closed loop move?
A changing magnetic field drives a current only around a complete circuit. In the closed loop that current creates a field opposing the magnet, so the loop moves; the split loop cannot carry a current, so nothing happens.
Which laws does this apparatus teach?
Faraday’s law of electromagnetic induction, which says a changing magnetic flux induces an e.m.f., and Lenz’s law, which gives the direction of the induced current as the one opposing that change.
What else is needed to run the demonstration?
Only a magnet to pass through the loops. Bar magnets, coils and a centre-zero galvanometer for measured induction work can be priced on the same quotation if your laboratory needs them.
Is Science Lab Supplies a trader for this item?
No. Each open and closed loop device comes off its own production line in Saha, Ambala, and the quotation you receive is prepared by that factory rather than by a reseller or agent.
Related Electromagnetic Induction Apparatus
The Physics Lab and Magnetism Physics items below take the induction topic from qualitative to measured: another Lenz’s law set, coils for inducing an e.m.f., a centre-zero galvanometer for the direction of induced current, and bar magnets to drive the loops. Together they cover the practical side of the chapter.
- Faraday's and Lenz's law Demonstration Set — PVC guide tube, 38 mm copper ring and a base with LED source.
- Apparatus for Studying the Production of Electricity by Induction — 700-turn and 1150-turn coils with a 30-0-30 galvanometer.
- Induction Coils with Cores — cored coils rated at 5 A for electromagnetism and Faraday’s law work.
- Search Coil — 3300-turn coil on a wand, with flying leads ending in 4 mm plugs.
- Galvanometer 30-0-30 mA — colour-coded moving-coil meter, 125 x 80 x 80 mm.
- Alnico Bar Magnet Pair — pairs with keepers and a clearly marked north pole, from 50 to 150 mm long.
- Bar Magnet Pair Chrome Steel — red and blue painted 75 x 12 x 5 mm pair with keepers.
Browse the full Physics Lab range, the Magnetism Physics range, or all physics lab equipment.
Last updated: 22 October 2026
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