Odpowiedzi

2010-03-29T20:04:14+02:00
P=800W
t=10h
k=0,30zł/kWh
K=?
=============================================
W=P*t=800W*10h=8000Wh=8kWh
K=W*k=8kWh*0,30zł/kWh=2,40zł