The unit of voltage is the volt, symbolized as "V." It is a measure of electric potential difference between two points in an electrical circuit or system. One volt is defined as the potential difference across a conductor when a current of one ampere flows through it, resulting in a power dissipation of one watt.
Voltage is a fundamental concept in electrical engineering and plays a crucial role in understanding and analyzing electrical circuits and devices. It is often used in conjunction with current (measured in amperes) and resistance (measured in ohms) in Ohm's law, which relates the three quantities and their relationships in an electrical circuit.