What is the unit of electrical work?

The unit of electrical work is the Joule. This unit is a fundamental measure in physics that quantifies energy, work, and heat. One Joule is defined as the amount of work done when a force of one newton acts over a distance of one meter. In the context of electricity, when a charge of one coulomb is moved through an electric potential difference of one volt, it represents one Joule of work done.

While Watt, Ampere, and Horsepower are critical units in the realm of electrical and mechanical systems, they serve different purposes. A Watt measures power, indicating the rate at which work is done or energy is transferred. An Ampere is a measure of electric current, quantifying the flow of electrical charge. Horsepower is a unit of power often used to compare mechanical power outputs, primarily in the context of engines.

Understanding these distinctions clarifies why Joules is the appropriate unit for electrical work, as it specifically relates to the energy expenditure associated with performing work within an electrical system.