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Why does an incandescent light bulb use more electrical energy than an energy saving bulb?
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How much of the electrical energy used to light an incandescent bulb is converted into light energy?
About 2 %.
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 device converts electrical energy into heat and light energy?
An incandescent light bulb would be a prime example.
Into what kinds of energy does a toaster convert electrical energy?
Mostly heat, and a little bit of light. A lot like an incandescent light bulb.
When electrical current flows through the metal filament of a light bulbelectrical energy is coverted to?
When electrical current flows through a lightbulb (whether it's CCFL, halogen, or incandescent), the trade-off is light and heat energy.
How much of the electrical energy used to light an incandescent bulb is converted into light energy?
About 2 %.
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 device converts electrical energy into heat and light energy?
An incandescent light bulb would be a prime example.
Are energy saving light bulbs brighter than regular light bulbs?
Not necessarily. They can be brighter, or less bright. Both the energy saving light bulbs and the old-fasioned incandescent light bulbs come in different powers.
What converts electrical energy into light?
We see the conversion of electrical energy into light in both incandescent and fluorescent lamps. The light emitting diode (LED) also does this.
What kind of energy does a toaster converts electrical energy?
Mostly heat, and a little bit of light. A lot like an incandescent light bulb.
Is it correct to say that an incandescent bulb and a light stick use the same form of energy to create light Why or why not?
No. One is chemical energy, the other is electrical energy.
What percentage of energy does an energy saving bulb save compared to an ordinary bulb?
It varies, depending on the specific model, but an energy-saving (fluorescent) light bulb should save at least half the energy, for the same luminosity, compared to the old-fashioned incandescent light bulbs. The incandescent light bulbs ought to be outlawed, except for specific purposes where the heat they generate is actually needed.
Into what kinds of energy does a toaster convert electrical energy?
Mostly heat, and a little bit of light. A lot like an incandescent light bulb.
Hoe does electrical energy get into light energy?
That depends on the type of lamp. For example in an incandescent light, the electricity simply heats up a wire until it glows.
Why do people say that ordinary light bulbs aren't energy saving?
No light bulbs actually save energy, they use it to produce light. However energy efficient bulbs use less energy than the ordinary incandescent type. To my mind describing them as energy saving is wrong, they should be described as "lower energy" bulbs.
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.)
