How is the electrical power consumed by a circuit best expressed?

The electrical power consumed by a circuit is best expressed in watts. Power is defined as the rate at which energy is consumed or converted and is calculated using the formula:

Power (P) = Voltage (V) × Current (I)

Where power is measured in watts, voltage in volts, and current in amperes. Watts provide a clear and direct measurement of how much electrical energy is being used by a circuit over time, making it the standard unit of power in electrical systems.

The other units mentioned, such as volts, ohms, and farads, represent different electrical properties. Volts measure electrical potential, ohms measure resistance, and farads measure capacitance. While these properties are vital for understanding electrical circuits, they do not represent power consumption directly. Thus, for evaluating how much power a circuit is using, watts is indeed the most appropriate unit.