Which of the following describes the function of current in an electrical circuit?

Current in an electrical circuit describes the flow of electrons through the conductors. It is a measure of how many charged particles move within a given time frame, typically expressed in amperes (A). This flow of electrons is essential for powering electronic devices, as it carries energy through the circuit to perform work, such as lighting a bulb or powering a motor.

In an electrical system, voltage represents the potential difference that drives the current, while resistance denotes the opposition to the flow of current. Capacitance relates to the ability of a component to store charge, which is different from the flow of that charge. Therefore, quantifying the flow of electrons is the most accurate description of the function of current in a circuit.