i m stuck at this!!
please solve!!
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Answer:
Given,
Power = 23W
Potential Difference = 220V
Cost of 1kWh = Rs. 0.8
Energy spent in a day by using the lamp for 6 hours = [Power*Time]/1000
= [23*6]/1000 kWh
= 138/1000 kWh
= 0.138 kWh
Energy spent in 105 days = [0.138*105] kWh
= 14.49 kWh
Total Cost = Rs. [14.49*0.8]
= Rs. 11.592
The Cost of Lamp after 105 days will be Rs. 11.592
I hope this helps.
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