What term is used to describe energy transferred per unit time in electrical systems?

The term used to describe energy transferred per unit time in electrical systems is power. Power quantifies the rate at which energy is used or generated and is measured in watts. One watt is defined as one joule per second, indicating how much energy is being transferred each second. Understanding power is crucial in electrical systems, as it helps determine the efficiency and effectiveness of electrical devices and systems.

Electricity refers to the flow of electric charge and is a broader term encompassing many aspects of electrical systems. Voltage measures the potential difference that drives electric current, while resistance quantifies how much a material opposes the flow of current. Each of these concepts plays a unique role in the overarching framework of electrical principles, but power specifically pertains to the rate of energy transfer.