A slide potentiometer is a type of variable resistor that is used in electronic circuits to control the amount of voltage or current given to a component in the circuit. It is usually a vertical or horizontal component with a slotted slider that is used to adjust the resistance between two contacts. This slider is usually marked with a scale indicating the amount of resistance the component is set to. As the slider is moved, the resistance changes, allowing the user to control the precise level of voltage or current in the circuit. Slide potentiometers are widely used in applications such as amplifiers, audio processors, and other circuits and machines that require precise control of the amount of power being applied.