Find the energy in kWh
Question.
Find the energy in kWh consumed in 10 hours by four devices of power 500 W each.

Solution:

Total power of 4 devices = 4 × 500 W

$=2000 \mathrm{~W}=\frac{2000 \mathrm{~W}}{1000}=2 \mathrm{~kW}$

Time $=10 \mathrm{~h}$

Energy consumed = Power × time

= 2 kW × 10 h = 20 kWh
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