What is the unit of power equivalent to one joule per second?

The unit of power equivalent to one joule per second is the watt. Power measures the rate at which energy is transferred or converted, and in terms of electrical systems, it quantifies how much work is done or energy is used over a specific period.

A watt is defined precisely as the rate of energy transfer that results in one joule of energy being transferred in one second. This makes it easy to relate this unit to energy consumption, as you can determine how many watts a device uses by looking at its energy conversion over time.

In contrast, hertz measures frequency, indicating cycles per second in oscillating systems, which is unrelated to power. Ohm is the unit of resistance in an electrical circuit, reflecting how strongly a component resists the flow of electric current. Volt, on the other hand, is the unit of electric potential difference, measuring the push that drives electric charges through a circuit. While these terms are all related to electricity, watt is specifically the measure of power.