# What is 100 watts?

Watts is a unit of power that is equal to volts x amps x Power Factor.

*Answer*

The **watt** is the SI unit for **power**.

Power is defined as *'the rate of doing work'*. Since work
is measured in joules, the watt is equivalent to (a special name
given to) a joule per second.

The watt is sometimes described as measuring 'electrical' power. In fact, there is no such thing as 'electrical' or 'mechanical' (etc.) power, as power is simply a rate.