Apparatus for Studying the Dependence of Electrical Resistance on the Factors that Determine it
Product Code : SCL-PL-11826
Apparatus for Studying the Dependence of Electrical Resistance on the Factors that Determine it (SKU SCL-PL-11826) lets students measure how a wire's resistance changes with its length, thickness and material, using test wires of 24 and 30 SWG in copper and iron, a 2–14 V supply and digital meters. It fits Class 10 science and Class 12 physics. The set is a Science Lab Supplies manufacture from Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, quoted by the factory to schools, colleges, tender contractors and distributors.
Specifications
Wire gauges, materials, supply rating and lead lengths for the resistance-factors set are listed row by row. In short, resistance is worked out from digital voltmeter and ammeter readings on a 2–14 V AC/DC, 6 A supply, and paired test wires of two gauges and two materials let one factor change while the others stay fixed.
| Specification | Value |
|---|---|
| SKU | SCL-PL-11826 |
| Power supply voltage | 2–14 V AC/DC |
| Power supply current | 6 A |
| Ammeter | Digital |
| Voltmeter | Digital |
| Test wires, 24 SWG | 2 pairs (about 0.56 mm) |
| Test wires, 30 SWG | 2 pairs (about 0.32 mm) |
| Copper test wires | 2 pairs, 30 SWG |
| Iron test wires | 2 pairs, 30 SWG |
| Leads, 100 cm | 2 pairs, 4 mm, red and black |
| Leads, 50 cm | 2 pairs, 4 mm, red and black |
| Demonstration table | Experiment demonstration table |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Resistance Factors Apparatus
The apparatus shows that resistance rises with length, falls as the cross-section grows and depends on the material. It follows the “factors on which resistance depends” activity of CBSE/NCERT Class 10 science and leads into resistivity in Class 12 physics, part of a school's electricity and magnetism lab kit.
- Class 10 science: resistance against length, joining two equal wires end to end and measuring their length on a Wooden Ruler 1 Metre.
- Class 10 science: effect of cross-section, comparing 24 SWG with 30 SWG wire, with the diameter checked on a Micrometer reading 0–25 x 0.01 mm.
- Class 12 physics: comparing copper and iron wires of the same gauge to introduce resistivity.
Standard Scope of Supply
Each set includes the 2–14 V power supply, the digital ammeter and voltmeter, two pairs each of 24 SWG, 30 SWG, copper 30 SWG and iron 30 SWG test wires, two pairs of 100 cm and two pairs of 50 cm 4 mm leads, and the experiment demonstration table.
Packing, MOQ and Lead Time
Quotations are available for one demonstration set or for every bench in a Class 10 laboratory, with the packing, delivery time and price set out for that quantity. Spare test wires, a rheostat or a multimeter can be added to the same quotation.
Science Lab Supplies has an Importer-Exporter Code as a registered exporter and is able to ship to buyers in Zambia, Rwanda, South Africa, Qatar, Sri Lanka and Vietnam. A message on the contact page or a list built in the enquiry cart brings back a priced reply, and the lab tender page explains how tender orders are handled.
Frequently Asked Questions
Which factors of resistance can this apparatus show?
It shows the effect of length, of cross-section (24 SWG against 30 SWG wire) and of material (copper against iron), measuring resistance each time from the voltmeter and ammeter readings.
What power supply is included?
A 2–14 V AC/DC supply rated at 6 A is part of the set. Use the DC output for resistance measurements and keep the current low so the thin wires do not heat up.
Is Science Lab Supplies the manufacturer or a trader?
The resistance-factors set is manufactured at the Science Lab Supplies factory in Saha, Ambala, India. Its own sales desk prepares the quotation, so you buy from the maker rather than from a trading firm.
Related Current Electricity Apparatus
Once students know what sets a wire's resistance, the next practicals combine resistors, compare wires on a bridge and look inside the cell. These Physics Lab and Electrical and Electronics items continue that sequence and add current control and measurement, and all of them can be quoted together with this apparatus.
- Apparatus for Studying Circuits for Series and Parallel Connections — three bulbs, three cells and a 0–50 Ω rheostat on a magnetic board.
- Apparatus for Studying f.e.m. and Internal Battery and Battery Resistance — three 3–4.5 V batteries with digital ammeter, voltmeter and rheostat.
- Resistance Dependence Apparatus — 1 m constantan and brass wires of several diameters with 4 mm sockets.
- Meter Bridge or Wheatstone Bridge With Pencil Jockey — 24 SWG constantan wire clamped along a wooden metre scale.
- Rheostat — 10 Ω at ±10% tolerance, rated 320 W in continuous use.
- Digital Multimeter — five resistance ranges from 200 Ω to 2000 kΩ.
- Poster - Resistance and Ohm's Law for a Section of a Circuit — laminated A1 wall poster, 594 x 841 mm.
Browse the full Physics Lab range, the Electrical and Electronics range, or all physics lab equipment.
Last updated: 22 October 2026
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