Question

In a house 4 tube lights of 40W for 8 h,2 fans of 60 W for 10 hrs,1 TV of 200w for 8 hrs daily

a) calculate total energy consumption in month of September.
b)Electricity bill if cost is 5 Rs per month.

Answer 1

Answer:

Energy consumed by 4 tubelights per day, E  

tubelight

​

=(4)(40)(5)=800 WH

Energy consumed by 3 fans per day, E  

fan

​

=(3)(80)(12)=2880 WH

Energy consumed by television per day, E  

TV

​

=(100)(6)=600 WH

Total energy consumed per day, E=E  

tubelight

​

+E  

fan

​

+E  

TV

​

 

∴  E=800+2880+600=4280 WH =4.280  KWH per day

Total energy consumed in 30 days, E  

T

​

=30×4.280=128.4  KWH

Cost of electric energy =Rs. 3.00×128.4=Rs.  385.20

Explanation:

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