what is the cost of operation for 24 hour a lamp requiring 1A on a 100V line if the cost of energy is 0.5 birr/kwh?
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Correct option is
D
Rs. 3
Given : P=0.1 kW t=1 hour per day
Energy consumed per day E=Pt=0.1×1=0.1 kWh per day
Total energy consumed per month E
T
=30×0.1=3 kWh per month
Cost of electricity =Re 1 per unit i.e per kWh
∴ Monthly bill =Re. 1×3=Rs. 3 per month
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