Question

Find the energy in kWh consumed in 10 hours by four devices of power 500 watt.​

Answer 1

Answer:

Power of each device, P=500 W=0.5 kW

Time for which the devices are used, t=10 hours

Thus energy consumed by 4 devices, E=4×P×t

E=4×0.500×10 kWh

⟹E=20 kWh

Answer 2

Answer:

Find the energy in kW h consumed in 10 hours by four devices of power 500 W each. Hence, the energy consumed by four equal rating devices in 10 h will be 4 — 5 kWh = 20 kWh = 20 Units.

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