Question

In a classroom 4 fans of 75 watts each is used for 5 hours a day and 2 tube-light of 60 watts are used for 2 hours every day. Calculate the total electrical energy consumption of the classroom in kWh. Also find out how much the class accounts for in the school's electricity bill if 1 unit costs Rs 8 in the month of July.​

Answer 1

Answer:

3.96Rs

Explanation:

W=Pt

so 4 fans use 0.075×5=0.375kWh

so 2 TL use 0.06×2=0.12kWh

so they consume 0.495kWh

so 495×10^-3×8

so 3960×10^-3Rs

so 3.96Rs that is approx 4 Rs

please vote only if i am correct