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*Potentiometer*[[Potentiometers are Variable Resistors|Potentiometer]]:Also known as a "POT" for short, a potentiometer is a variable resistor. With three terminals, two across which the entire resistance appears, and the third terminal with a wiper arm that moves to a different spot on the resistor as the shaft is turned. The resistance between the wiper and one end terminal gets smaller while, at the same time, the resistance between the wiper and the other end gets larger. This allows the potentiometer to be used as a variable voltage divider, for use in attenuators, such as volume controls or tone controls. :Also known as a "POT" for short, a potentiometer is a variable resistor. With three terminals, two across which the entire resistance appears, and the third terminal with a wiper arm that moves to a different spot on the resistor as the shaft is turned. The resistance between the wiper and one end terminal gets smaller while, at the same time, the resistance between the wiper and the other end gets larger. This allows the potentiometer to be used as a variable voltage divider, for use in attenuators, such as volume controls or tone controls.