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From the electric current that powers it.
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∙ 11y ago
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Where does the energy for a light bulb come from?
it come from the energy source in the middle of the light bulb he clearly asked what type of energy is it?!
When a light bulb is glowing which form of energy goes into the light bulb?
Electrical goes in. Electromagnetic (heat and light) come out.
What waste energy come from a light bulb?
Mainly heat.
Where does the energy powering a light bulb ultimately come from?
The Sun.
Why is a low energy light bulb described as more efficient than a normal light bulb?
Because efficiency is measured in Output/input. At the same light bulb output, one with lesser energy input required is higher in efficiency. Possible confusion come from description of low energy light bulb without stated the high or low energy is compared at what lux it can produce light.
When a light bulb is glowing which form of energy goes into the bub?
Electrical goes in. Electromagnetic (heat and light) come out.
Where does energy come from and where does it go?
energy is neither created nor can it be destroyed. energy doesn't go anywhere it changes forms. ex. light energy can turn into heat energy inside of a light bulb
What is the effiency of 60watt bulb run on a 100joule?
"60 watts" means "60 joules every second". That's what a '60 watt' bulb is designed to consume. If you put 100 joules of energy into a light bulb, 100 joules of energy are going to come out of it, one way or another. Either that energy will be converted into light and heat by the bulb's filament, or else it won't get consumed at all, and it'll come out the other side of the bulb and still be available for use in some other device. So, comparing output energy to input energy is not an effective way to evaluate the efficiency of a light bulb. What you need to do, in order to compare the economy and effectiveness of light bulbs, is to compare LIGHT output to input ENERGY.
How come a 60 watt light bulb has a higer temperature than a 40 watt light bulb?
The electric power measured in watts is used to heat a filament in the light bulb (which glows because it is very hot). More energy gives more heat. It's very simple.
How do you know how to change the front light bulb on a 2002 Malibu car?
Remove the light bulb connector from the light. Take hold of the light bulb, push in and turn at the same time. The light bulb will come out. Reverse the process to install the new light bulb.
How come you can see the stars?
Stars give out light energy, that is they are luminous. Thus we see them for the same reason we see a lighted torch bulb.
How much energy does an incandescent lightbulb use versus a fluorescent?
Yes that's true fluorescent bulbs are better because it usess 75% less energy and works longer than a incandescent light bulb. Yes...and no. It is true that power usage decreases with fluorescent balb usage. However, one must take into account that they pollute more (i.e. mercury and other heavy metals).
