Question

2.
How much electrical energy in kilowatt hour is consumed in operating ten
60W bulbs for 10 hours per day in a month of 30 days?
(A)
(C)
1800
18,000
(B) 18
(D) 180​

Answer 1

180 kWh.

Step-by-step explanation:

10 bulbs of 60W gives load = 60W × 10

                                               = 600W

                                                 , or 0.6kW

10 hours a day in 30 days = 300 hours

If  10 bulbs are lighten in 30 days = 0.6kW × 300

                                                        = 180 kWh.