What is the SI unit of power?

The SI unit of power is the watt (W).

Power is the rate at which work is done or energy is transferred. It is a scalar quantity and is measured in watts (W) in the SI system of units. One watt is defined as the amount of power required to do work at a rate of one joule per second. In other words, if a device uses one watt of power, it is using one joule of energy every second.

Power can also be expressed in other units such as horsepower (hp) or kilowatts (kW). One horsepower is equivalent to 746 watts, while one kilowatt is equal to 1000 watts. These units are commonly used in the automotive and electrical industries.

It is important to note that power is not the same as energy. Energy is a scalar quantity that is measured in joules (J) and is the ability to do work. Power, on the other hand, is the rate at which energy is transferred or work is done. Therefore, a device may use a lot of energy but have a low power output, or vice versa.

In conclusion, the SI unit of power is the watt (W), which is defined as the amount of power required to do work at a rate of one joule per second. Other units such as horsepower (hp) and kilowatts (kW) are also commonly used.