Odpowiedzi

2010-04-11T23:08:26+02:00
U=230V
P=1150W
t=7*0,5h=3,5h
k=0,30zł/kWh
K=?
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W=P*t=1150W*3,5h=4025Wh=4,025kWh
K=W*k=4,025kWh*0,30zł/kWh=1,21zł
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