What does a volt (V) measure?

A volt (V) measures electrical pressure or potential difference, which is a fundamental concept in understanding how electrical circuits function. Voltage represents the force that pushes electric charges through a conductor, such as a wire. It is the driving factor that allows current, measured in amperes (amps), to flow within the circuit. This concept is essential for technicians because understanding voltage helps in diagnosing and troubleshooting electrical systems.

In contrast, resistance is measured in ohms and indicates how much a material opposes current flow. Electrical power, typically measured in watts, describes the rate at which energy is consumed or produced in a circuit, while current flow refers to the amount of charge flowing through the circuit measured in amps. Understanding the distinction between these measurements and recognizing voltage as the driving force behind current flow is crucial for anyone working in the field of aircraft electronics.