Two uses of a potentiometer are:
- It is used to compare the electromotive forces (emf) of two cells. This application is common in physics experiments to measure voltage differences accurately without drawing current from the cells.
- It is used to determine the internal resistance of a cell. By balancing the potential difference using the potentiometer wire, the internal resistance can be calculated precisely.
These uses leverage the potentiometer's ability to provide a variable voltage that can balance against an unknown voltage in a circuit, allowing precise electrical measurements.
