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