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Potentiometer
Potentiometer (Product Code: SLE/PHY/74) is a slide-wire potentiometer used to compare the emf of cells and measure potential differences by the null method in school and college physics laboratories. A 24 SWG constantan wire runs along a metre scale divided in cm and mm between stout plated brass end plates, and a jockey is included. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Resistance wire | 24 SWG constantan |
| Scale | Metre scale subdivided in cm and mm |
| End plates | Stout plated brass, with the wire clamped to them |
| Terminals | Heavy-duty 4 mm socket terminals on the terminating strips |
| Base | Polished hardwood baseboard |
| Included | Jockey |
| Overall size | Approx. 1.13 m × 80 mm × 50 mm |
| Product code | SLE/PHY/74 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Slide-Wire Potentiometer Used For?
A steady driver cell connected across the wire sets up a uniform fall of potential along it. Students then use the jockey to find the balance point for a second cell or circuit, read the balancing length on the scale, and compare emfs, find the internal resistance of a cell or measure a small potential difference without drawing current at balance.
These experiments appear in most senior-secondary syllabi, which makes the potentiometer standard physics practical equipment for CBSE and state-board labs as well as first-year college courses. Press the jockey gently and lift it before moving along the wire; dragging it while pressed scratches the constantan and spoils the uniform resistance per centimetre. Keep the driver current low so the wire does not warm up during a reading.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this potentiometer. The company makes it at its own licensed factory at Saha, Ambala, Haryana, India, rather than buying it in from a trader, and supplies it factory-direct to schools, colleges, dealers and importers. Replacement jockeys and other spares are handled by the manufacturer itself — ask us when you order. More background is on the ScienceLab company profile.
Related Physics Lab Equipment
A complete potentiometer circuit needs a few more items on the bench:
- Jockey with Insulated Handle (Single) — a spare or replacement jockey
- Moving Coil Galvanometer — the null detector for finding the balance point
- Rheostat — to set the driver current through the wire
- One Way Key — to switch the driver circuit on only while reading
- Potentiometer, 10 wire — a longer-wire model for finer balance lengths
See more apparatus in Physics Lab Equipment.
Frequently Asked Questions
What is included with the Potentiometer?
The Potentiometer comes mounted on a polished hardwood baseboard with its 24 SWG constantan wire, metre scale, plated brass end plates and 4 mm socket terminals, and a jockey is included. Cells, galvanometer, rheostat and connecting leads are ordered separately.
What wire does the Potentiometer use?
The Potentiometer uses 24 SWG constantan wire stretched along a metre scale divided in centimetres and millimetres. Constantan is chosen because its resistance changes very little with temperature, giving a steady potential gradient along the wire during an experiment.
How large is the Potentiometer?
The Potentiometer measures approximately 1.13 m × 80 mm × 50 mm, so it needs a bench length of just over a metre. Leave space beside it for the driver cell, galvanometer, rheostat and key used in the circuit.
Who manufactures the Potentiometer?
The Potentiometer is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM at its own licensed factory in Saha, Ambala, Haryana, India. Schools, dealers and importers receive quotations and repeat-order support directly from the manufacturer.
Is a calibration certificate available for the Potentiometer?
The Potentiometer works by the null method, with results taken from balance lengths on its scale. If your institution needs a calibration certificate or test report for it, please discuss the requirement with us through the contact page before ordering.
What should a quotation request for the Potentiometer include?
A quotation request for the Potentiometer should give the quantity, the delivery location, and whether you also need spare jockeys, galvanometers, rheostats or keys. With those details the manufacturer can quote a complete set for your physics lab in one reply.
Request a Quote
Quotes for the Potentiometer come direct from the manufacturer. Send your requirement through the contact page or add the item to the enquiry cart.
Last updated: 24 September 2026
