Question

Find the energy in kilowatt hour consumed in 10 hours by four devices of power 500w each

Answer 1

here is your answer mate
Given, Power=500 W
Time=10 hours
Energy=?

energy consumed = power x time
= 500 W x 4 x 10 h
= 20,000 Wh
= 20,000/1000 KWh
=20 KWh.
hope it helps you
mark it brainliest..

Answer 2

P = 500 W

Power of 4 devices

= 4 × 500W

= 2000 W

Time taken = 10 hour

Energy = Power × Time

= 2000W × 10 hour

= 20000 Wh

Change in kWh

= 20 kWh