What term describes the amount of work being done in a unit of time in a circuit?

The term that describes the amount of work being done in a unit of time in a circuit is power. In electrical terms, power is the rate at which energy is transferred or converted. It is measured in watts, where one watt equals one joule per second.

In a circuit, power indicates how much energy is being used over time to perform work, such as lighting a bulb or powering a motor. The relationship between voltage, current, and power is encapsulated in the equation P = VI, where P is power, V is voltage, and I is current. This equation highlights how power depends on both the voltage supplied and the current flowing through the circuit.

Regarding the other concepts: voltage refers to the electric potential difference, current represents the flow of electric charge, and resistance is the opposition to the flow of current in a circuit. While all these terms are related to electrical systems, they do not specifically describe the rate of work done over time, which is the defining characteristic of power.