The Function and Working Principle of a Potentiometer A potentiometer, often called a pot, is a type of variable resistor. Its main function is to adjust the level of resistance in a circuit, which in turn controls voltage or current. It works by sliding or rotating a contact (called the wiper) across a resistive track. Depending on the position of the wiper, the resistance changes, allowing you to increase or decrease signals such as volume, brightness, or motor speed. For example: In audio dev
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