Rheostat 4.5 ohm
Product Code : JA-EE-7524
The Rheostat 4.5 ohm (SKU JA-EE-7524) is a low-value sliding rheostat for adjusting current in low-resistance circuits during school and college electricity practicals. This 4.5 ohm rheostat is wound with heavily oxidised resistance wire on a vitreous enamel steel tube with die-cast end stands, and carries a nickel-plated heavy-duty slider and 4 mm terminal posts for plug-lead connection. JaincoLab supplies it to physics laboratories and education projects.
Specifications
The Rheostat 4.5 ohm has a 4.5 ohm winding of heavily oxidised resistance wire on a vitreous enamel steel tube supported by die-cast end stands, a heavy-duty nickel-plated sliding contact and 4 mm terminal posts; its current rating is confirmed on the quotation.
| Product | Rheostat 4.5 ohm |
| SKU | JA-EE-7524 |
| Resistance | 4.5 ohm |
| Winding | Heavily oxidised resistance wire on a vitreous enamel steel tube |
| Supports | Die-cast end stands |
| Sliding contact | Heavy duty, nickel plated |
| Terminals | 4 mm terminal posts |
Applications of the 4.5 ohm rheostat
The 4.5 ohm rheostat is chosen for circuits that already have little resistance, such as coils, solenoids and low-voltage lamps, where it gives useful control of current without dropping most of the supply voltage across itself.
- Current control through coils and solenoids in magnetic field experiments
- Brightness control of low-voltage lamps
- Variable load when measuring cell EMF and internal resistance
- Adjusting current in electromagnet demonstrations
- Class sets of low-value rheostats
Scope of supply and ordering
The listing covers one 4.5 ohm rheostat with sliding contact and 4 mm terminal posts. Supplies, meters and leads are separate items. The current rating, accessories, spares and quantities are confirmed on the quotation.
MOQ, lead time and packing depend on the quantity and delivery destination and are stated on each quotation. JaincoLab supplies rheostats singly or in class quantities, with export orders to Africa, the Middle East and South and South-East Asia.
Frequently asked questions
What is the resistance of this rheostat?
It is 4.5 ohm.
When is a low-value rheostat preferred?
When the rest of the circuit has low resistance, such as coils and low-voltage lamps, so that the rheostat still gives useful control of current.
How is it connected?
Through 4 mm terminal posts for a conventional 4 mm plug.
Related products
Other low-value and high-value rheostats are in electricity equipment from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the Rheostat 4.5 ohm, send the quantity and delivery destination via the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.
