Question

Calculate the electricity bill amount for a month of 31 days , if the following devices are used as specified.

a) 3 bulbs of 40W for 6 hours

b) 5 tubelights of 40W for 6 hours

c) a refrigerator of 400W for 24 hours

given the rate of electricity is rs 2.50 per unit​

Answer 1

Answer:

Bulb = (40/1000) X 2 X 6 = 0.48 units

Tube lights = (50/1000) X 2 X 8 = 0.8 units

TV = (120/1000) X 6 = 0.72 units

Total power consumed = 0.48 + 0.8 + 0.72 = 2 units

electricity cost = 2.50 X 2 X 30 =Rps.150

Explanation: