Odpowiedzi

2010-01-16T13:52:45+01:00
Q=U*I*t
t=10h=36000s
Q=230V*9A*36000S=74520000Ws=74520000J=74520kJ=74,52MJ
M - mega
74520000Ws=74520kWs=74520/3600=20,7kWh