Q15. You turned on your laptop at 3:00 PM and finished your homework at 9:00 PM, but you forgot to turn it off before going to bed. At 7:00 AM the next morning, the laptop finally ran out of battbry. If the computer runs at 150 watts, and the electricity costs Rs 10 per kilowatt-hour. Given that this happened each
Answers
Given : You turned on your laptop at 3:00 PM, and finished your homework at 9:00 PM,
you forgot to turn it off before going to bed.
At 7:00 AM next morning, the laptop finally ran out of battery
the computer runs at 150 watts, and the electricity costs Rs 10 Rs per kilowatt hour
this happened each school day in the month i.e. for 25 days
https://brainly.in/question/47096646?tbs_match=1 - Complete Question
To Find : how much did this careless wastage of electricity cost
you each month
Solution:
You turned on your laptop at 3:00 PM, and finished your homework at 9:00 PM,
So for that time there is no wastage as its being used
Wastage hours are from 9:00 PM to 7:00 AM
= 10 hours
Electricity wasted = 150 * 10 = 1500 Wh
= 1.5 kWh
Cost per day of wastage = 1.5 * 10 = Rs 15
Wastage cost for 25 days = 25 * 15 = 375 Rs
this careless wastage of electricity cost you each month = Rs 375
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