Lets write the data down:
P = 0.3 kW = 300 W
t = 12 minutes = 720 seconds
25 times a day
The total amount of time the furnace motor runs is:
T = 25 x 720
T = 18,000 s
So the total energy cost will be:
E = P x T
E = 300 X 18,000
E = 5,400,000 J
Answer:
