Question

In a house 8 tubelights of 40W each are used for 6hours ,2 bulbs of 10W each are used for 4 hours daily . Calculate the energy consumption of that house in the month of november

Answer 1

8*40*6/1000=1,.92+
2*10*4/1000=.08
=2kwh
for 30 days =60kwh

Answer 2

Answer:

81600 Watt

Explanation:

Energy consumed  by 1 tubelight =40W

Energy consumed by 8 tubelights= 40W*8

                                                         = 320W

                                             

Time used by 8tubelight = 6*320

                                                   = 1920watt

Energy consumed by 1 bulb = 100W

Energy consumed by 2 bulb = 100W*2

                                                = 200W

Time used by 2 bulbs = 200*4

                                     =800watt

So,

Total energy consumed= 1920W+800W

                                        =2720W

Total energy consumption in the month of november

                      = 2720W*30

                       = 81600W