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Humbleness
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Homework Statement
Two 15Ω coffee-makers are connected to a 120V power supply for two hours a day each. Find the power and energy.
Homework Equations
P=V2/R
ΔE=PΔt
The Attempt at a Solution
I am assuming, since there are two coffee-makers connected to one 120V power supply, that:
P = V2/R = 1202V/30Ω = 480W or 0.48kW
ΔE = PΔt = 0.48 kW x 2h = 0.96 kWh
Can someone confirm?