Question

If a machine of 500 is left on for 13 hours hat would be the energy consumed in kilowatt per hour

Answer 1

Given,
Power of device, P = 500 W = 0.5 kW
Time taken, t = 10 h
We know that,
Energy consumed = Power x time taken
E = 0.5 kW * 10 h = 5 kWh.