Why are Watt Hours not Watts per Hour? Are they the same thing?
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Watts is power – which is the time rate of energy….meaning it’s energy divided by time.
If you have a 100 watt light bulb, that tells you how much energy per unit of time you are using – or the energy rate.
If you want to know how much total energy you have used in a time period, you have to multiply the energy rate x time….if you leave a 100 watt light on for 1 hour, you have consumed 100 watt-hours….or 0.1 kw-hr.
Dividing watts (which is energy over time) by time again doesn’t have much practical use.
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