What is the standard unit of power in the International System of Units (SI)?

The standard unit of power in the International System of Units (SI) is the Watt. Power is defined as the rate at which work is done or energy is transferred over time. Specifically, one Watt is equal to one Joule per second, which describes the transfer of energy. This relationship highlights how power measures how quickly energy is being used or converted.

Understanding power in terms of its relationship to energy and time is fundamental in physics, as it allows us to quantify how effectively systems perform work. Energy is measured in Joules, time in seconds, and the expression of power in Watts provides a clear and standardized way to communicate these concepts universally across various scientific disciplines.