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rheostat
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rheostat

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, which can be used, for example, as the volume control of an amplifier, is also known as a potentiometer.



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95 Hardcover QP623 Endogenous small regulatory RNAs are of intense research interest because they act as cellular rheostats, subtly modulating gene expression.
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