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Radha's house is fitted with 2 lamps of ...

Radha's house is fitted with 2 lamps of 60W each and 2 fans consuming 0.4A each . If energy is upplied at 200V and coats Rs. 2.50 per kWh. Find the monthly bill if all the appliances run for 10 hours a day.

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Power of 2 lamps=`60xx2=120W`
Power of 2 fans `=2xxVxxt=2xx200xx0.4=1 60W`
Total power `=120+160=280W`
Energy consumed during 30 days `=(280xx10xx30)/(1000)=84` kWh
Total cost =`84xx2.5= 210`
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