Potentiometer

Single-turn potentiometer with metal casing removed to expose wiper contacts and resistive track

A potentiometer, informally a pot, is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

单词	Volume knob
释义	Volume knob 原声例句 TED演讲（视频版） 2023年9月合集 Fear and control are the volume knobs for pain. 恐惧和控制是痛苦的音量旋钮。英语百科 Potentiometer A potentiometer, informally a pot, is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.
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Volume knob

Potentiometer