Question

What is the function of a potentiometer?

Answer 1

This is a very basic instrument used for comparing emf of two cells and for calibrating ammeter, voltmeter and watt-meter.

Answer 2

The measuring instrument called apotentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment