Question

in a house the following electric loads daily used 1) 5 no. of 40W tubelight used a for 5 hours day 2) 4 no. of 80W fans used a for 8 hours per day 3)1 no. of 60W TV receiver used a for 5 hours per day 4) 4 no. of 60W lamps used a for 4 hours per day calculate the total energy consumed the in units per day and also the cost of a electric bill for the month of January if the cost of energy is 1 rupees 50 Paisa per unit
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Answer 1

Explanation:

1) 1 kwh = 1000 W

Bulb Rating =40 W = .04 kW

Bulb illuminates for = 5 hrs/day

Bulb consumes units( kWH)/day= .06×5= .3kWH/ day = .3 units/ day

In 30 days = .3×30 = 9units

1 unit cost = 3.50/-

12 units cost = 3.50×9= 31.5/-

hope it's help you