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I think it's the law in the UK and they save energy and are therefore more eco-friendly but they are also kinda annoying because they are quite dull at first.
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∙ 13y ago
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How efficient is a light bulb?
An incandescent bulb is 96% efficient as a heater, and 4% efficient as a source of light. A fluorescent bulb is only 60% efficient as a heater, and 40% efficient as a source of light. An LED bulb is only 10-20% efficient as a heater, and 80-90% efficient as a source of light (but that light is usually unidirectionally directed... harder to do diffuse lighting with them).
A light bulb wastes about 85 percent of its energy how efficient is it?
It uses the remaining 15% to generate light and thus it is 15% effective.
What is the most energy efficient light bulb?
Light bulbs in order of the least to most energy efficient : incandescent, halogen, fluorescent, LED. For home owners, most reasonable is the CFL lightbulb, which is cheaper and longer lasting than the LED.
Does a 60-watt electric light bulb create heat energy?
Yes. Part of the energy is converted to light, part to heat. The percentage depends on the type of light bulb. Fluorescent and LED light bulbs are more efficient than incandescent light bulbs. A 60-watt incandescent bulb will be uncomfortable to remove from the socket with your bare hands after turning it off. However, a 100-watt bulb will burn you if you remove it with your bare hands after turning it off.
What is the source of energy in a light bulb?
Electricity is the source of energy in a light bulb.
Why is it better to use energy efficient light bulbs?
Energy efficient light bulb saves half of energy consumed by a regular bulb, although it has a lower range light compare to the high energy consumer bulbs.
What light bulb is most energy efficient and why?
edunno soz
Who invented the energy efficient light bulb?
Bob the builder!
How many watts in an energy efficient light bulb?
100
One example of an energy effecient device is an?
An example of an energy efficient device includes an energy efficient light bulb.
How many joules are saved by a energy efficient light bulb?
there are 100 joules in an energy efficient light bulb 75 joules go towards the light and 25 joules go towards the heat
What is the least efficient kind of light bulb?
It is the Incandescent light bulb. Most of the energy are lost as heat
What is the job of a light bulb?
The job of a light bulb is to convert electrical energy into visible light energy. (Not ALL of the electrical energy a bulb uses is converted to light energy. Their efficiency is quite low. An incandescent light bulb is more efficient as a heater than as a source of visible light. Fortunately, our eyes are very sensitive.)
How is a led bulb different to a light bulb?
LED light bulbs are more energy efficient, environment friendly, and provide you more savings.
Is compact fluorescent light the best energy saving bulb?
No, the most energy efficient bulbs are LED (Light Emitting Diode) light bulbs.
What is the price difference between a normal light bulb and an energy efficient one of the same power?
The energy efficient light bulb costs several times as much as the normal (incandescent) light bulb. The exact prices may vary from region to region. In any case, the extra cost will be more than compensated by savings in electrical energy, over the lifetime of the bulb.
How efficient is a light bulb?
An incandescent bulb is 96% efficient as a heater, and 4% efficient as a source of light. A fluorescent bulb is only 60% efficient as a heater, and 40% efficient as a source of light. An LED bulb is only 10-20% efficient as a heater, and 80-90% efficient as a source of light (but that light is usually unidirectionally directed... harder to do diffuse lighting with them).
