Question

10w led is used 10 hours per a day. Find the 10 days consumption of electric power

Answer 1

Electrical Energy consumption is practically in many countries around the world measured in Kilowatt-hours or kWh.

10 hours for 10 days with power rating of 10W

Electrical Energy = 10 Watts ☓ 10 hours ☓ 10 days

Electrical Energy = 1000 Watt-hours

Electrical Energy = 1 kWh

Therefore from your question, the bulb will consume one unit ( 1 kWh) of electrical energy measured in kWh assuming no other resistive loses through the connection wires.

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Answer 2

Answer:

The consumption of LED of 10W is 1kWh.

Explanation:

Given power of the LED is 10W

time of using LED is 10 hours per a day

Consumption of electrical energy is given by the power times the time

                    $E=P\times t$

                        $=10 \times 10 \times 10$

                        $= 1000 W-h$

                        $= 1kWh$

Therefore, the consumption of LED is 1kWh.