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Answered 2010-11-06 00:48:00

The average life span of a light bulb being on 8 hours a day is 2000 hours.

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led bulb lasts for more than 24 hours if they glow continuously but if we use the periodically(from some time to time ) they lasts long for many years


Takes 300 hours for the average light bulb to burn out


it depends,the flourecent kind hols 60 watts,lumens has 120 and they last for 10,000 hours.


An average lifespan is 2000 hours. It depends on how many on off cycles it is put through. The more cycles from hot to cold shortens the life of the bulb.


A 100 Watt light bulb from Nella Park should give you about 2000 hours -- if they still make them. A 100 Watt light bulb from overseas, I rather not say.


Edison failed many times - no one knows how many - to make a filament for a light bulb that would last a long time. He did not invent the light bulb - he was working on a BETTER light bulb that would last longer.


Thomas Edison crowns 14 months of testing with an incandescent electric light bulb that lasts 13½ hours


A light bulb consumes watt-hours per day. How many watt-hours does it consume in days and hours?


In ten hours, a 200W bulb will use: 10 * 200 = 2000 Watt-hours = 2 kwh


A 30-watt bulb uses 0.03 kilowatt-hours every hour, or 30 kilowatt-hours in 1000 hours. To find the kilowatt-hours, multiply 0.03 by the time in hours.


Convert the 100 watts to kilowatts. Calculate the total time in hours, and multiply by the number of kilowatts that the light bulb uses.


An average wattage light bulb should last about 2000 hours.


Light emitting diodes (LED's) - They're only called 'everlasting' because they last many times longer than 'standard' bulbs. Typical lifespan of an incandescent bulb is around 1000 hours continuous use. LED's last for many thousands of hours - so they get technically labelled as everlasting.


A 250 watt light bulb takes 250 watts of power. The energy it uses (that you pay for) is measured in watt-hours or kilowatt-hours. A 250-watt bulb running for 4 hours uses 1 kilowatt-hour.



their are 8 parts to the light bulb


Well it depends on what light bulb it is :)


100 x 24 watt-hours, which is 2.4 kilowatt-hours.


It depends what light bulb, although for a regular light bulb it takes about 2-3.



It depends how big the light bulb is to be honest


Today projector bulbs can last for as long as two thousand hours. If you have an older projector then you will not get as many hours.


NONE!!!! to mum! this WAS done by daisy amber *insert last name*


A 60 Watt light bulb consumes electrical energy. If you leave is on for 24 hours, it consumes 60 x 24 = 1440 Watt-Hours, or 1.44 Kilowatt-Hours. If you want to know how much money this much energy costs, look on your last electricity bill. There it will give the cost of one Kilowatt-Hour.


No, there are many instances where a light bulb is never turned off. It is not a good principle to get into as the watt meter keeps turning and money is being spent to keep it on in daylight hours.



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