Rheostat
Product Code : EL-PLE-14366
Eduscope India is a leading Rheostat
The Rheostat from EduScope India is a compact variable resistor designed for physics laboratories, offering precise control over current flow in a circuit, part of our Physics Lab Equipment range. Quick Answer: this Rheostat is a 5 Ohm, 3A sliding-contact variable resistor with 380VAC/400VDC rating and ±10% tolerance - reliable electronic lab instruments India physics departments use for current-control experiments (a distinct model from our simpler fixed-range rheostat).
Construction and Design
This rheostat features a sliding contact made of copper and graphite, allowing smooth and consistent resistance adjustment as the contact moves along the resistance element. Its construction offers good linearity, ensuring predictable and even changes in resistance across the full range of travel. The unit is small and light, making it easy to mount, handle, and use in standard physics lab setups without adding unnecessary bulk to the workbench.
Electrical Ratings and Specifications
The rheostat carries a resistance tolerance of ±10% and an earthing resistance of <0.1 Ohm, supporting safe and stable operation. It is rated for 5 Ohm, 3A, with a working voltage of 380VAC, 400VDC, making it suitable for a range of standard laboratory circuit experiments.
Typical Uses
The rheostat is commonly used to control the flow of electric current in a circuit by varying resistance. It is often applied in experiments involving speed control of a motor or adjusting the brightness of a light, giving students hands-on experience with variable resistance and its practical effects on circuit behaviour.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Resistance/Current | 5 Ohm, 3A |
| Working Voltage | 380VAC, 400VDC |
| Resistance Tolerance | ±10% |
| Earthing Resistance | <0.1 Ohm |
| Contact Material | Copper and graphite sliding contact |
Related Instruments
For circuit measurement and control experiments, this rheostat pairs well with the Multimeter Analog and Multimeter Digital for reading voltage, current, and resistance, as well as with Plug Keys for completing and breaking circuit connections during experiments.
