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There are two ways to answer this question, depending upon what the questioner means by the "size" of a light bulb.
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Size as form factorThe physical size of a light bulb makes no difference upon the amount of energy that is consumed. A large globe light, like around a vanity mirror, that is rated at 25 watts consumes exactly the same amount of energy as a small refrigerator light bulb also rated at 25 watts.
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Size as a power ratingThe wattage rating of a light bulb is directly proportional to energy consumed by that light bulb. A light bulb rated at 60 watts consumes 50% more energy than a 40 watt light bulb.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoLike all electrical devices, light bulbs consume energy. Traditional (incandescent) light bulbs work by using electricity to heat a "filament" inside the bulb until it is so hot that it glows brightly, whereas newer "energy saving" bulbs use a different principle entirely (they are rather like a small "strip light" or "fluorescent light" such as are normally found in shops and offices etc)
To get the same amount of light, traditional bulbs use much more electrical energy than the newer type. You might think that this means that by using new-type "energy-saving" lighting you will obviously save energy (and hence reduce your utility bills), but it's not quite that simple. Most of the energy consumed by a traditional bulb goes to creating heat (you have probably noticed that they are too hot to touch). If you have, say, 4 60watt bulbs in your lounge, you are using 4 x 60 = 240 watts of electricity, of which almost all is being given off as heat and is therefore warming your lounge. If you replace these bulbs with low energy ones, that 240 watts of heating will be made up by your central heating system which will "trip on" the radiators, so you will burn extra gas to make up the lack of heating from the lights! So your gas consumption (and your gas bill) will go up as your electricity bill goes down.
This effect is most pronounced in winter, when you are likely to use more lights for a much longer time (because days are short) and less pronounced in summer - but you don't use lights or heating much in summer anyway.
So it's a complicated business, but the point is that if you buy energy-saving bulbs which claim to offer a saving of (say) 100 pounds a year, keep in mind that your gas bill will go up (although not necessarily by 100 pounds) - if you are using a very expensive form of heating you could find that your overall costs actually rise, although this is unlikely. You might well save some energy, but probably only a fraction of what most people expect, and of course most people see the reduced electricity bill and feel good, but don't notice the rise in gas consumption - or even if they do, they don't realise it's because of the new light bulbs!
Wiki User
∙ 13y agoyes
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Is a light bulb an example of light energy or of electrical energy?
A light bulb converts energy from one form to another: from electrical energy to thermal energy in the form of light and heat. Most light bulbs which have an incandescent filament convert electricity into some light energy plus a lot more heat energy, whilst the type of light bulbs which use fluorescent tubes create much less heat and thus require much less electrical energy to run. Typically, to produce the same amount of light energy, compact fluorescent light bulbs require only 20% of the electrical power drawn by incandescents.
What types of energy does a light bulb use?
electric energy
What type energy does glow sticks use?
Light Energy, Potential Energy, and possibly Heat Energy.
Does an incandescent bulb and a light stick use the same form of energy to create light?
No. The incandescent bulb uses electrical energy and the light stick uses chemical energy.
What energy transformation takes place when you use a flashlight?
The real answer to this is light energy
Does the size of a light bulb effect it's energy use?
Circular bulbs use high volts,an there fore use more energy,longer thinner bulbs use less.
Does the size of a light affect its energy use?
no of couse not it depends on which lught bulb and brand your are using
How do you use light energy?
i use light energy for like light and the sun uses light and so does the moon so all sorts of things use light energy
How do light energy use?
i use light energy for like light and the sun uses light and so does the moon so all sorts of things use light energy
What source of energy do organism use when they do not use the sun's energy?
light energy
How do you prove that it is the wattage and not the physical size of a light bulb that matters for energy use?
Energy use is measured in watts. The watts used by a light bulb is on the package or the bulb. Find bulbs with the same wattage but different physical sizes if you want to prove this.
What kind of energy chloroplast use?
Light energy is used. It is stored in glucose
What would you use to transfer electrical energy into light and sound energy?
you flip a light switch on and it is turned into light energy
How do you prove that the size of a light bulb does not matter for energy use?
What matters is the electrical power it uses in watts and the amount of light in lumens. The size of the light does not matter, whch can be proved by trying bulbs of different sizes with the same watt and lumen rating.
How does light use energy?
It gives us light
What type of energy do you use from the sun?
Light energy and heat energy
Is a light bulb an example of light energy or of electrical energy?
A light bulb converts energy from one form to another: from electrical energy to thermal energy in the form of light and heat. Most light bulbs which have an incandescent filament convert electricity into some light energy plus a lot more heat energy, whilst the type of light bulbs which use fluorescent tubes create much less heat and thus require much less electrical energy to run. Typically, to produce the same amount of light energy, compact fluorescent light bulbs require only 20% of the electrical power drawn by incandescents.
