True power in a circuit is measured in which unit?

True power in an electrical circuit is measured in watts. This unit quantifies the actual amount of power consumed by a device to perform work, taking into account the power factor in AC circuits. Unlike reactive power, which is also present in AC systems and is measured in volt-amperes reactive (VAR), true power reflects the effective energy consumption over time. In contrast, volts measure electric potential, ohms represent resistance, and amperes quantify current flow. Watts thus provide the most accurate representation of real energy consumed in a circuit, making it essential for evaluating the efficiency and performance of electrical systems.