What is the unit of electrical current?

The unit of electrical current is the ampere. This unit measures the flow of electric charge in a circuit. It quantifies how much electric charge passes through a conductor over a specific period. One ampere is defined as one coulomb of charge moving past a specific point in one second. This fundamental unit is essential for understanding electrical systems, as current is one of the primary parameters that describe how electricity behaves in circuits.

The other terms relate to different electrical concepts; watt is a unit of power, reflecting the rate at which electrical energy is used or generated, ohm is the unit of electrical resistance, measuring how much a material resists the flow of current, and volt is the unit of electric potential difference, indicating how much potential energy per charge is available to drive current through a circuit. Together, these units interact within Ohm's Law, which relates voltage, current, and resistance, but they each signify different aspects of electrical phenomena.