Question

Find the energy in kw h consumed in 10 hour by four devices of power 500 w each

Answer 1

Power usage of 1 device $= 500W$

Total Power usage of 4 devices $= 500W \times 4 = 2000W$

Total Power usage in kW $=\frac{2000}{1000}$

$=2 kW$

Total time = 10 hours

∴ Total Energy used $= kW \times hours$

$=2 \times 10$

$=20 kWh$

The total energy consumed was 20 kWh.

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Answer 2

Answer:

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