In an electrical circuit, what unit measures current?

In an electrical circuit, current is measured in Amperes, commonly shortened to Amps, which is represented by the letter A. This unit specifically quantifies the flow of electric charge in a circuit. To put it simply, one Ampere equals one coulomb of charge moving past a certain point in one second.

Understanding the context of the other units helps clarify why Amperes are the correct answer. Volts measure electrical potential or voltage, which defines the pressure that pushes electric charges through a circuit. Ohms measure resistance, indicating how much a material opposes the flow of current. Watts measure power, representing the rate at which electrical energy is consumed or produced in the circuit. Each of these units plays a crucial role in understanding electrical systems, but Amperes are the specific measure of current itself.