Watt-hour sentence example
Meters intended to measure electric energy (which is really the subject of the sale and purchase) are called joule meters, or generally watt-hour meters.
Hence the meter is a watt-hour meter and measures electric energy.
It can be constructed to be either an amperehour meter or a watt-hour meter, but is usually the latter.
Other convenient practical units of the same kind would be the watt-hour, 3600 joules, which is of the same order of magnitude as the kilocalorie, and the kilowatt-hour, which is the ordinary commercial unit of electrical energy.Advertisement