In a house, four 60 W electric bulbs are lighted for 2 hours and two 100 W bulbs are lighted for 4
hours every day. Calculate the energy consumed in the house for 30 days
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Answer:
38.4 kwh
Explanation:
To calculate the energy consumed in house ---
No. of appliances × used in hours × Power rating × No. of days
____________________________________________
1000
First case:
4 × 2 × 60 × 30
= ___________ kwh
1000
8×60×30
= _______ kwh
1000
8 × 1800
= ______ kwh
1000
14400
= _____ kwh = 14.4 kwh
1000
Second case :
2 × 4 × 100 × 30
= _____________ kwh
1000
800 × 30
= _______ kwh
1000
24000
= ______ kwh
1000
= 24 kwh
Now, Total energy consumption =
14.4kwh + 24 kwh
= 38.4 kwh
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