Mr Sharma has a 5 A meter in his house He uses 5 CFL bulbs of 15 watt each for 5 hours and an electric heater of 1200 watt for 1 hour everyday find the cost of payment of the bill of the month at the rate of Rs3 per unit up to 20 units Rs. 6.50 per unit from 21 to 30 units and Rs 8 from 31 to 50 units with Rs 75 service charge if the payment is made on the 35th day of meter reading
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Correct option is D)
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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