Answers

2016-02-07T14:04:00+05:30
Power = energy/time
Power =500/20
Power =25 W
therefore the power of the lamp = 25 W
Now,
25 W in kW = 0.025 kW
Therefore the electrical energy consumed in 15 days,
15 days in hours = 360 hr
So energy consumed in units = 0.025*360 = 9 units
Therefore the answer is 9 units….
I hope it helps……….
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