Eureka Bare Wire 20 swg
Product Code : JA-EE-7613
Eureka Bare Wire 20 swg (SKU JA-EE-7613) is a 0.9 mm copper-nickel resistance wire with a low temperature coefficient, supplied bare at 125 g per reel. A 20 SWG eureka wire is a practical middle gauge for school and college work: stiff enough to stretch straight on a board, yet thin enough to give measurable resistance over a metre or so. JaincoLab supplies it for resistance coils and resistance experiments alongside its other eureka and constantan gauges.
Specifications
Eureka Bare Wire 20 swg has a diameter of 0.9 mm, is made of a copper-nickel alloy of low temperature coefficient and comes bare in 125 g reels, and the listing describes it as suitable for resistance coils.
| Product | Eureka Bare Wire 20 swg |
| SKU | JA-EE-7613 |
| Alloy | Eureka (copper-nickel) |
| Temperature coefficient | Low |
| Gauge | 20 SWG |
| Diameter | 0.9 mm |
| Reel | 125 g |
| Finish | Bare |
| Suitable for | Resistance coils |
Uses of 20 SWG eureka wire in the laboratory
In practicals, 20 SWG eureka wire is stretched along a board to verify Ohm’s law and to show that resistance rises with length, used as the sample wire when finding resistivity with a metre bridge, and wound into resistance coils whose value holds steady as the coil warms.
- Verifying Ohm’s law with a length of resistance wire
- Showing that resistance is proportional to length
- Sample wire for resistivity measurement with a metre bridge
- Winding resistance coils of stable value
Scope of supply and ordering
Supplied as bare 20 SWG eureka wire, 0.9 mm in diameter, in 125 g reels. Heavier and finer eureka and constantan gauges, nichrome and copper wires are separate listings. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation according to the number of reels and the delivery destination. JaincoLab supplies resistance wire to single laboratories and in bulk for colleges, education projects and tenders, with export to Africa, the Middle East and South and South-East Asia.
Frequently asked questions
What is the diameter of 20 SWG eureka wire in this listing?
It is 0.9 mm in diameter and is supplied at 125 g per reel.
Why is eureka wire used for resistance experiments?
It is a copper-nickel alloy with a low temperature coefficient, so its resistance changes little as current warms it.
Can it be used in a metre bridge experiment?
Yes. A measured length can serve as the sample wire whose resistance and resistivity are found with the bridge.
Related products
- Eureka Bare Wire 18 swg
- Constantan Bare Wire 22 Swg
- Wheatstone Bridge Two Gap
- Nichrome Bare Wire 18 Swg
Wires, bridges and meters for current electricity are in Electricity Equipment from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order Eureka Bare Wire 20 swg, send the number of reels and the delivery destination via the JaincoLab contact page or email [email protected]. Tender and project enquiries can be sent through the tenders page.
