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jsmith613
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Homework Statement
Please can someone look at the attached question (I have extracted MS and relevant previous pieces of information)
Where do they get the idea that 100 W is produced over 24 hours ??
Homework Equations
The Attempt at a Solution
I know power = work done / timebut if power is in Watts, time is in seconds (W = J/s)
also if each low energy bulb is 11W (11*4 = 44W). so surely no energy is needed from national grid but they suggest it does (44W << 100W)
please can someone explain the MS (or Q or both) to me