# How many light bulbs are there in the world?

# How many light bulbs can you fit in a fridge?

It depends on how many drawers are in the fridge. It also depends on whether you are stupid enough to freeze lightbulbs.

# How many light bulbs are there in Europe?

Can anyone possibly know? I should think at a rough guess about 10 per person

# How many electrons are in the filament of a light bulb?

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\nI think you probably know that the flow of electrons causes the filament to heat up and glow when the electricity is switched on and you want to know the number of electrons in the electricity? Well, it doesn't work quite like that, the electrons are all in the electron shells of the tungs…ten atoms making up the filament and there are the same number of electrons in these shells (and thus he filament) whether the electricity is on or off. When electricity is on, the electrons (in the outer shells) hop from one atom to the next, no extra electrons get into the filament (electrons coming in at one end are balanced by electrons going out at the other end) While all atoms have electrons, not all elements have atoms with 'free' electrons to allow this hopping - these elements will not conduct electricity. ( Full Answer )

# What impact did the light bulb have on the world?

It killed the whale oil lamp and gas lighting industries. Itcreated massive levels of light pollution, making it nearlyimpossible to see stars at night from populated areas.

# How many light bulbs does it take to change a light bulb?

Just one, but it requires someone with a modicum of intelligence to remove the old one and replace it. :)

# How many watts are in a light bulb?

It should be written on its box, and likely on the bulb (the globeor collar) as well. Not all bulbs have the same power (watts).

# How many lumens are in a fluorescent light bulb?

The amount of lumens that are emitted from a fluorescent lamp is given approximately by the luminance (cd/m^2) times the length (m) times the diameter (m) times pi squared. Unfortunately, we don't usually know the luminance. The number of lumens varies greatly from bulb to bulb, across the variou…s types of fluorescent technologies. One rule of thumb, that won't apply to every type of fluorescent lamp, is to multiply the rated wattage by 80 (lm/W) to get the number of lumens. If so, a 40 watt fluorescent lamp will output about 3200 lumens, but, as you will find elsewhere, on Wikipedia:- 100 W tungsten incandescent (220 V): 1380 lm 100 W tungsten incandescent (120 V): 1750 lm. So the above information does not seem quite right for a 40 watt fluorescent bulb. Furthermore, for the analysis to be accurate, one has to realize that light can be either focused as in a laser or dispersive as in an incandescent bulb or fluorescent tube. Lumen ratings given with a square meter to distance ratio would help a lot but are not often given. Technical information is sometimes printed on the boxes which fluorescent tubes come in from the factory. For instance, on one box of compacts fluorescents it states that a 100 watt compact fluorescent will put out 1700 lumens. Dispersive of course..
For further information see the Related links shown below. ( Full Answer )

# How many kilowatts does a light bulb use?

Thsi depends on the light bulb specification. For example if you buy a standard 60W light bulb from your supmarket then this will consume 0.06kilowatts. Its simple just divide the wattage stated on the light bulb by 1000 to give you the kilowatts

# How many watts in a light bulb?

a normal light bulb is about sixty watts. if the light bulb is being fed a certain amount of bolts the watts can increase.

# How many watts is your light bulb?

Every person has a different power of light bulb. In my room, I have a 7.5 and a whole bunch of 60s. The number of watts you choose for your light bulb depends on how bright you want your light to be. The higher the number, the brighter it is.

# Worlds longest lasting light bulb?

Probably a LED bulb, because it has no wear-out components. For example, a tungsten bulb filament gets thinner and thinnerbecause tungsten sublimes off the filament and plates out on theglass envelope. CFL bulbs have hot cathodes with the same problem. LED bulbs only fail due to manufacturing defe…ct or misuse. Answer: The current holder for longest lasting bulbs is The world's longestlasting light bulb is the Centennial Light located at 4550 EastAvenue, Livermore Clifornia. Its claimed that the bulb is at least110 years old ( Full Answer )

# How many different types of light bulbs are there?

Three. Four if you include the one that pops ontop of peoples head when they have ideas on a cartoon. :P Hahaha

# How many watts does a light bulb use?

Answer #1: Anywhere from 1 (power saver) to 200 (filament/halogen). ==== Answer #2: It depends on the bulb and its rating. Household incandescent bulbsgo from 2 watts to 200 wattsdepending on the design and materials used. ==== Answer #3: -- Incandescent bulbs are available ranging …from 1.19 watts (PR2 flashlight bulb) to 700 watts (aircraft obstructon lightingbeacon). -- LEDs start at about 0.02 watts. -- Halogen reflector lamps using 5,000 watts arein regular commercial production. -- Around 1932, General Electric built a small quantity of 50,000 -watt incandescent bulbs ... enough to establish that they could work, could deliver areasonable lifetime, and could be shipped from place to place without breaking. ( Full Answer )

# How many amps is light bulb?

You just have to divide the watts by the voltage to find the amps.For example 60 watts on a 120 v system would take Ã‚Â½ amp.

# How many types of light bulbs are there?

352 There are six different types of light bulbs invented as of December 27, 2012. They include the incandescent light bulb, the halogen light bulb, the fluorescent light bulb, the high-density discharge lamps, LEDs, and sodium lamps.

# How many light bulbs are used to light the Eiffel Tower?

There are 352 yellow-orange floodlights within the tower structure, plus 20,000 lights flashing on the outside.

# How many watts in a LED light bulb?

It differs just like the regular bulbs. What's great about LED light bulbs is that, you only need lesser watts than the normal because of its high efficiency. A typical low-current LED would be rated for 2 mA at about 2 V consumes about 4 mW (4 milli watts or .004 watts).

# How has the light bulb benefited the world?

besides the norm..light inside at night...it also set up competition between tesla and Edison. tesla found alternating current....this allowed multiple lights to be lit with one power wire. Edison had direct current where every bulb needed its own wire. tesla won the bid to light the worlds fair...i… don't remember the year... but not a single power wire was to be seen. a huge breakthrough for its time. ( Full Answer )

# How has the light bulb impacted the world?

any where you look you will se a light bulb. This made things able to be done at night for more squezeen of work hours. probably the light bulb invented the night shift also.

# How many light bulbs are sold in a year?

This is an impossible question to answer. Light bulbs are made and sold everywhere in the whole wide world..
This is an impossible question to answer. Light bulbs are made and sold everywhere in the whole wide world.

# How did the light bulb help the world?

we wouldn't be able to see in the dark today if it wasnt for him creating the light bulb

# How did the light bulb invention change the world?

The light bulb changed the world because people did not have to go around with a candle in differantplaces..

# How many amps do light bulbs draw?

Depend on watt and voltage use of light bulbs. You can use this ohm's law formular to calculate the current draw on light bulbs..
I (current in amp) = P (watt)/ E (voltage).
If 25W light bulb use in 115V AC (resident home) then current draw will be:.
25/115 = 0.22A or 22 miliamperes..
Hope this …help. ( Full Answer )

# How many kwh does a light bulb use?

This information is written on the glass of the bulb. Incandescent bulbs are usually sold as 40, 60, 100, and 150 watts. Energy saving bulbs use much less, for instance a 20 watt energy saving bulb will produce about as much light as a 100 watt incandescent bulb. The watt reading on the bulb is th…e number of watts used per hour (ie kwh). Additional Answer The power of a lightbulb is printed on its glass envelope, and expressed in watts ( W ). Power describes the rate at which it uses energy. Energy (for electricity bills) is expressed in kilowatt hours ( kW . h ). To determine how many kilowatt hours are used by the lamp, you multiply its power rating (expressed in kilowatts) by the time (expressed in hours) it is in use. The answer, incidentally, will be approximate, because the power rating of the lamp only applies at its rated voltage, and the actual voltage may be different from this rated voltage. Incidentally, it is incorrect to say that the power rating (watts) is 'the number of (kilo)watts used per hour' because that would need to be expressed 'kilowatts per hour', not 'kilowatt hours', and is completely meaningless because power is already a rate. ( Full Answer )

# How did the light bulb have an affect on the world?

Light bulb simply provides vision and brightness to dark (evening) side of the world. Light bulbs turn a night into a day.

# How many volts are there in a light bulb?

That depends on the type of light bulb and the application. Astandard house hold incandescent bulb draw in the neighborhood of120v or 240v ac depending on the country you are in.

# How do you calculate how many volts are used to light a light bulb?

Normally that would be however many volts your house runs on. The US/Canada standard is 120 volts at 60 hertz, while most of Europe runs on 240 volts at 50 hertz. Keep in mind though there are all types of light bulbs that run on all voltages from 12 to 240. It should say the voltage on the bulb tho…ugh? but if you live in North America and you are asking about a normal house-type bulb, your quest will most likely end with 120. ( Full Answer )

# How many lumens are in a 168 light bulb?

This varies widely between manufacturers, whether it's a "clear" bulb or a "frosted" bulb, and what type bulb as in incandescent, florescent , quartz, etc etc

# How many watts in C7 light bulb?

A C7 bulb is typically very low wattage, sort of like the older style Christmas tree bulb. The wattage can vary, but usually in the range of 1 to 7 watts.

# How many amps does a light bulb draw?

Depends on the power rating of the bulb, and what voltage the grid is at.

# How many amps are there in a light bulb?

There are zero amps in a light bulb. The amperage that a bulb draws is dependant upon the voltage that is applied to the bulb and the wattage rating of the bulb. The equation for amperage is Amps = Watts/ Volts. When you establish what these parameters are, using the equation will give you the answe…r that you are looking for. ( Full Answer )

# How many amps per light bulb?

Look on the light bulb for the voltage and the power in watts. Thendivide the watts by the voltage and that gives the amps. Some CFL bulbs also state the current as well as the voltage andpower, which is because they can have a poor power factor.

# How many tomato does it take to light a bulb?

sorry don't know ; im only eleven "I know" 1 supertomato or 3,003,494,560,327,650,836,140,520,347,257,345,803,465,876,324,065,086,237,248+ lemons dressed as tomatos ; ha I'm twelve

# How many amps to light a 25 w light bulb?

Find out the power of the light in watts, and divide by the voltageit runs at. The answer is the current in amps.

# How many amps for a light bulb?

Find out the wattage and voltage of the bulb. Divide the watts bythe volts, that gives the amps.

# How many hours does a light bulb last?

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

# How many batteries can light up bulbs?

This question cannot be answered without knowing at least the voltage of the light bulbs and also the voltage of the battery that is being asked about.

# How many light bulbs are in a series circuit?

as much as you want but remember if one stops working they will all stop working

# How many volts does a light bulb take?

Light bulbs are made according to where they will be used and what voltage is generally available for that location. In a house, 120 volts is the standard, so household bulbs are designed to work with 120 volts. A car however is almost always designed to use 12 volts. Therefore, that needs 12 volts.… There are other more odd applications that require 24 v. ,36 v. , 5 v. etc. Bottom line, use a bulb that matches what ever it is in and it will light. ( Full Answer )

# How many watts is there in a light bulb?

600-1100 watts I've some 3volt bulbs that are rated at 80 mA, which means it uses draws 2.4 Watts. There are also small 7 watt 120v bulbs, usually used in night lights. The maximum load you can put on a 15A 120v circuit, without blowing a circuit breaker or fuse would be 1800 watts.

# Was the light bulb expected to be put in homes around the world?

yes because they can be used in a lamp, ceiling lights, micro waves, outside lights and garage

# How many amps to light a 600 watt light bulb?

A lamp designed for 120 v takes 5 amps, one intended for 240 vtakes 2Ã‚Â½ amps. Voltage x current gives the watts.

# How many light bulbs can you light with a battery?

it takes 1 C type battery That answer is not really very helpful because the question doesn't say what the voltage of the light bulbs is! This question cannot be answered without knowing at least the voltage of the light bulbs and also the voltage of the battery that is being asked about.

# How many killawatts are in a standard light bulb?

"A standard light bulb I would consider to be a 60 watt light bulb, and kilowatts are the amount of usage in a light bulb. From my research I have found that a standard 60 watt light bulb uses approximately 1.44 Kilowatts per hour."

# How many apples does it take to light a light bulb?

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

# How many volts in a little light bulb?

Small bulbs come in many different voltages. It will always be marked on the bulb and will only work correctly with that proper voltage applied.

# How many atoms of mercury are in a light bulb?

Compact fluorescent light bulbs contain mercury. (For that reason,it is important to be very careful with a broken compactfluorescent bulb, because mercury is highly toxic.) Most other kinds of light bulbs do not contain any significantamount of mercury.

# How many lumen's are in a A watt light bulb?

Ordinary incandescent bulbs produce 13 lumens per watt. For halogenbulbs, 17 lumens per watt; for CFLs 65 lumens per watt; for LEDs upto 100 lumens per watt have been claimed

# How many filaments exist in a light bulb?

Most incandescent bulbs have one filament. Some halogen bulbsworking on 240 v have two filaments in series, which must be tosimplify manufacture of bulbs being made for 120 v and 240 v in thesame factory.

# How many volts from a battery can light up a light bulb?

Depends on what the bulb is rated for. If the voltage of the battery matches the voltage of the bulb it will light up.