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A potentiometer used as a variable resistor.
(Electrical Engineering) a variable resistance, usually consisting of a coil of wire with a terminal at one end and a sliding contact that moves along the coil to tap off the current
an adjustable resistor so constructed that its resistance may be changed without opening the electrical circuit in which it is connected, thereby controlling the current in the circuit.
A resistor whose resistance can be continuously varied between two extremes so as to control the flow of current in an electric circuit.
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|Noun||1.||rheostat - resistor for regulating current |
dimmer - a rheostat that varies the current through an electric light in order to control the level of illumination