Question

In a house , 2 bulbs of 50 watt each are

used for 4hours a day and two 50 watt fans

are used for 10 hours a day. Calculate the

units of electricity consumed in a month of 30 days​

Answer 1

Answer:

Total units of electricity consumed in a month of 30 days is 42 units

Explanation:

Power rating of the bulb = 50 W

No of bulbs = 2

Time used per day = 4hrs

Total power consumed = 50X2X4 W = 400Wh

Power rating of fan = 50 W

No of fans = 2

Time used per day = 10 hrs

Total power consumed = 50X 2X 10 =1000 Wh

Per day power consumption = 1000+400 = 1400 Wh

Power consumed in 30 days = 1400X 30 = 42000Wh

In kWh = 42kWh

1 unit = 1 kWh

so 42 kWh = 42 units