Simply put a variable resistor is able to have its electrical resistance adjusted. They specifically work with voltage and currents that are a part of the circuit. Types Of Resistors Linear And Non Linear Resistors Video Wire A Potentiometer As A Variable Resistor Instructables Lesson Starter Astable Transistor Circuit These devices are used when working with electrical circuitry because they help to control voltage andor currents. Function of variable resistor in a circuit . A movable metal is rotated in clockwise or anticlockwise direction that changes the resistance of preset. A variable resistor is the type of resistor which changes the flow of current in a controlled manner by offering a wide range of resistances. The electrical resistance is varied by sliding a wiper contact along a resistance track. It can be used as a three terminal as...
