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If it is a 100 watt bulb, this would take 2.4 KWh in a day and hence 876 KWh in a year. This would be the same whatever the source of the electricity
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoLight bulbs vary in size but a common one is 100 watts. This will use 2.4 kwh if left on for 24 hours, or 1 kwh for 10 hours use
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How much energy does a 100 watt light bulb use if it is left on all day?
100watts x 24 hours
Who invented the modern-day light bulb?
Thomas Edison
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
When did thomas Edison invent the light bulb date year month and day?
December 31, 1879
How much electricity does a human use per day?
a average person uses about 5.7 kWh per day
How much money can you save using energy efficient light bulbs?
That depends on the type of bulbs you replace, the type of replacement light bulb, how long you typically use a light bulb, and what the cost of electricity is in your country. Here is a sample calculation: Previously we normally used 100 Watt incandescent light bulbs. A 40 Watt fluorescent light bulb shines about as bright. That's a saving of 60 Watts or 0.06 kilowatts, equivalent to 0.06 kWh/hour. If we use the light bulb 6 hours a day, 30 days a month, that's 180 hours a month. Multiply that by the savings rate, and you get an energy saving of 10.8 kWh per month. At the costs of the light bulbs we use, and of electricity, we recover the cost of the light bulb in 1-2 months - and the light bulb typically lasts much longer than that. However, you should look how much YOU pay for electricity - just look at the bill from your power company. You should also check for how much you can get a light bulb in your country - and adjust the estimate according to how much artificial light you use per day.
What keeps the electricity in the light bulb When I was 4 years old I was And to this Day Way AHEAD of my time. My mom and dad thought this was a dumb question?
Electricity is not kept in a light bulb because there is nowhere to put it... It is not like a battery! Maybe, because they knew a light bulb can't keep any electricity, that is why your Mom and Dad thought your question was dumb? Well, it is not really all that dumb, it just had one word in it that was wrong. No question is dumb if it is asking asking how something works because that is always a good thing to do. That's the best way to learn about things! What we can say to answer your question is: Electricity is used up or consumed by a light bulb. The electricity it uses up makes it glow so brightly that it sends out light which we can see. When a light bulb is switched off it is said to go out, which just means it is not glowing any more. It can't glow when it is switched off because no electricity can get into it through the switch. That is why we say we have to switch on a light bulb, using a switch, to give it enough electricity to glow and give out light.
How do you use the Light bulb?
we use the light bulb in every day life
Theres a 100watt bulb left on for one 30 day month uses 72 kilowatt-hours of electricity the cost is 5.76 How much does a 100watt bulb use in 1week and how much does it cost?
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How does the light bulb help us in this modern day?
AnswerIt is my opinion is that the light bulb can be important like if it was a dark night and you wanted light. You could turn the light on (light bulb). I also think it is stupid because if the power went out you couldn't use the light bulb because you need power!AnswerThe light bulb is important because it lead to the infrastructure of electricity in society and all of the many things that we now use electricity for. The practical light bulb led the way to so many other useful inventions; it 'shed light' on what was possible.
Can you use a light plan bulb in place of reptile day bulb?
NO
How much does it cost to burn 7.5 watt night light bulb?
The bulb uses 7.5 watt-hours each hour, or 90 watt-hours if left on for 12 hours. 1 unit of electricity would be used in 11 days at 12 hours per day.
What year did Benjamin Franklin make the light bulb?
Benjamin Franklin did not invent the lightning bulb? He did however discover electricity May 10th 1752. Thomas Edison invented the light bulb in 1879.
How many watts does a 60w light bulb consume in a day - in pound sterling?
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.
How much energy does a 100 watt light bulb use if it is left on all day?
100watts x 24 hours
Who invented the modern-day light bulb?
Thomas Edison
HOW did the light bulb make life better?
The light bulb is safer and easier to use than gas lamps, and electricity is easier to distribute for the purpose of street/home lighting than gas. A cheaper, safer, and easier means of bringing light to the darkness was born with its invention.
