Quote:
Originally Posted by jjackstone
And Watts are power, whereas Watt hours are energy(power used over a period of time).
JJ
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A Watt is actually a Watt-second.
A watt is a measure of actual current flow (at a certain voltage) or work done.
1 Watt=1 volt x 1 amp for 1 second of time. P=IxE
If you look at your amp meter and see 10A and your Volt meter says 12V,
during each second, you are using 120 Watts of power.
If you only left the switch on of 1/2 a second, only 60 watts was used..
If you kept the switch on for an hour, you will have used 120 watt hours.
After about 9 hours, you would have used one KWH.