Quick Answer: The Rheostat, Nichrome Wire, Groove Type is a variable resistor wound with oxidised nichrome wire on a grooved ceramic or vitreous-enamelled steel former. A phosphor bronze sliding contact with an insulated handle sets the resistance, and connections are made at 4 mm brass binding posts.
Last updated: October 2026
Key Features
Oxidised nichrome resistance wire
Insulated grooved ceramic or vitreous-enamelled steel tube former
Phosphor bronze sliding contact brush with insulated handle
Die-cast metal end supports
4 mm brass binding posts
Technical Specifications
Specification
Value
Resistance wire
Nichrome, oxidised
Former
Insulated grooved ceramic or vitreous-enamelled steel tube
Slider
Phosphor bronze contact brush, insulated handle
End supports
Die-cast metal
Terminals
4 mm brass binding posts
About This Product
A rheostat is used to vary the current in a circuit or to divide a voltage, by moving the slider along the resistance wire. Students use it in Ohm’s law experiments, in potentiometer and bridge set-ups, and wherever a circuit needs smooth adjustment. Enquiries from South Korea, Kazakhstan, Barbados, Poland, Zimbabwe and Turkey for the Rheostat, Nichrome Wire, Groove Type receive an export quotation.
Frequently Asked Questions
What is the resistance wire in the Rheostat, Nichrome Wire, Groove Type?
It uses oxidised nichrome wire on a grooved ceramic or vitreous-enamelled steel tube former.
