Answer :
Final answer:
The energy consumed by a 100W electric bulb used for 8 hours in one day is 0.8 kilowatt-hours (kWh). This is determined by multiplying the power of the bulb (in kilowatts) by the length of time it is used (in hours).
Explanation:
The energy consumed by an electrical appliance can be calculated using the formula Energy = Power x Time. Energy is measured in kilowatt-hours (kWh), Power in watts (W), and time in hours (h).
In this case, the power of the LED bulb is 100W and it is in use for 8 hours a day. To convert the power to kilowatts we divide by 1000. Therefore, the power in kilowatts is 0.1 kW.
Now we multiply this by the number of hours the bulb is used; 0.1 kW * 8 hr = 0.8 kWh. Hence, the electric bulb of 100W that is being used for 8 hours a day consumes 0.8 units (kWh) of energy in one day.
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