A rheostat that varies the current through an electric light in order to control the level of illumination.

ETYM Greek rein + statos standing still.
Instrument for measuring electric resistance.
For regulating current; SYN. variable resistor.
In physics, a variable resistor, usually consisting of a high-resistance wire-wound coil with a sliding contact. It is used to vary electrical resistance without interrupting the current (for example, when dimming lights). The circular type in electronics (which can be used, for example, as the volume control of an amplifier) is also known as a potentiometer. + prikaži više