Physics and Chemistry

Electricity and Magnetism

How did the electrical unit watt originate?

Named for the Scottish engineer and inventor James Watt (1736–1819), the watt is used to measure electric power. An electric device uses 1 watt when 1 volt of electric current drives 1 ampere of current through it.


This is a web preview of the "The Handy Science Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App