Quick Answer: The Electrical Training Dual Tube Rheostat is a variable resistor built on a dual-tube resistance body, used to control current in low-voltage school and college circuits during Ohm's law, voltage-drop and current-limiting practicals.
Last updated: October 2026
Key Features
Dual-tube resistance body
Adjusts circuit resistance during supervised electricity practicals
Students see current increase or decrease as resistance changes
Input and output terminals, with range and rating details on the label
Supports wiring practice, meter reading and controlled observation
Technical Specifications
Specification
Value
Type
Dual tube rheostat
Function
Variable resistance and current control in low-voltage educational circuits
Connections
Input and output terminals
About This Product
The dual-tube construction suits practical training where this format is required. With all connections made and the supply off, the rheostat is set to the recommended safe starting position. Students then apply the low-voltage supply, move the slider gradually and record values from the ammeter and voltmeter to relate voltage, current and resistance. The Electrical Training Dual Tube Rheostat is available for supply within India and for export to Australia, Laos, Lebanon, Comoros and Central African Republic.
Frequently Asked Questions
Q1. What does the rheostat do in an Ohm's law experiment? It varies the resistance in the circuit so that current can be changed in controlled steps while students record matching voltage and current readings.
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