Two common uses of a potentiometer are:
- To compare the electromotive force (EMF) of two cells or to measure the internal resistance of a cell. This application relies on the potentiometer's ability to provide precise voltage measurements without drawing current from the cells being tested.
- As a control device for adjusting electrical properties in various equipment, such as volume control in audio devices and speed control in motors. Potentiometers are used as variable resistors or voltage dividers to fine-tune outputs like audio loudness or motor speed.
These uses highlight both the potentiometer's precision in measurement and its role in controlling electrical circuits.
