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What was it like in the olden days without a light bulb?
they had oil lanterns and candles.
How do you compute electrical consumption of a device?
A simple electrical device is a 60 watt light bulb. The bulb is consuming 60 watts of electricity from the moment you turn it on. If you keep that light bulb on for 10 hours the power used is 60 watts x 10 hours = 600 watts of power. Electricity is sold in Kilowatt Hours. A Kilowatt is 1000 watts of power. Depending on the state you live in, it sells for 7 to 18 cents per Kilowatt Hour. So if you leave that light bulb on 10 hours per day for 30 days you will have used up 600 watts x 30 days = 18,000 watts of electricity = 18 Kilowatt Hours. At an average cost of 10 cents per Kilowatt Hour that bulb costs you $1.80 per month to leave on. The formula is watts x time x cost per Kilowatt Hour = cost of use...Answer provided by Gene Evangelist
How much eletrical energy energy in kilowat hours would 60 w light bulb use un 60 sdays if left on steadily?
60 days is 24x60 hours, so the energy used is 60x24x60 watt-hours, 86400 watt-hours or 86.4 kilowatt-hours or units. If it is a 60-watt incandescent bulb it could be replaced by a 12 watt low-energy bulb, and in the same time that would use only 17.3 units, saving 69 units costing about £10.
How did the light bulb change the way people lived?
In the good ol days when it got dark all you had to read by was a candle or some sort of oil light not usually very good for the eyes,so the y helped protect and preserve eye sight. They made self education far easier. they led to more people having a time to read in the days of long working hours this was a great thing. electric light was safer and healthier. and made the environment that people lived in safer.
Who and why did they invent light?
Thomas Elva Edison Invented Light bulb, so, one can say that he is the father of artificial light. He never invented it for the sake of any public good ,that invention was an accidental event actually . Although, now a days people may say that because it was needed for lightening up the streets and at other things, which takes place during night and which need artificial light, but believe me this is not a case here and every other possible usage for the same was determined afterwards.
How many days did edisons light stay lit?
89 days
How many days the light bulb lasted?
Takes 300 hours for the average light bulb to burn out
How many days did it take Thomas Edison to invent the light bulb?
He invented the incandescent light bulb and it took him 12 years.
How long does a normal light bulb last?
A flourescent light bulb lasts between 6000 to 18000 hours.
how many days the bulb lasted?
Takes 300 hours for the average light bulb to burn out
What is now days light bulb filament made out of?
tungsten
What was it like in the olden days without a light bulb?
they had oil lanterns and candles.
Which was invented first the light bulb or telephone?
In those days they used oil lanterns i think......
What did Joseph swan invent?
Joseph Swan invented the carbon filament because to see light back in the days. Which turned out to be a light bulb.
If a 100 w light bulb is lit for 8 hours each day for W days in a month many kilowatt-hours will the bulb consume?
Convert the 100 watts to kilowatts. Calculate the total time in hours, and multiply by the number of kilowatts that the light bulb uses.
Why would a light bulb burn out after two days of use?
If a light bulb is handled roughly before it was installed, the filament holder could have been weakened. Another reason that bulbs burn out before their time is that they are being submitted to a higher voltage than the bulb rated for.
Why life of a bulb ends after certain time span?
By bulb, it is assumed a light bulb is intended rather than a flower bulb or any other kind of bulb. Light bulbs burn out because they are engineered to do so. There would be less profit to the bulb manufacturer if he made bulbs to last longer, which he could if he wanted to. In the early days of bulb manufacture, a bulb was made which still continues to burn over 110 years later. See the link below for more information on the 110 year bulb.
