Question

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

Answer 1

here is your answer mate
given,
total power, P= 500 W x 4 =2000 W
time, t=10 h
energy consumed = power x time
=2000 W x 10 h
=20,000 Wh
=20,000/1000 KWh
=20 KWh
hope it helps you