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because old - style light bulbs work by passing an electric current through a thin piece of metal (tungsten is commonly used in these) to heat it up enough to make it glow. In these old - fashioned light bulbs, most of the input energy is given out as heat (about 95%) and the rest light. However, in new, so called,"energy efficient" light bulbs, an electric current is passed through different gases (including Mercury gas) to make the particles collide with each - other and give out light. Depending what metal vapour you use determines the colour of the light given off. These are more energy efficient because about 60% of the energy given out is heat, and 40% light, so it isn't ideal, but is better than the old light bulbs. However, these new light bulbs might not be entirely benefitial as they are less cost - effective than the old ones. Written by a 12 - year old!
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∙ 14y ago
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What is the energy transformathion in a flashlight?
A flashlight can transform electric energy to light energy and heat energy.
When the flashlight is turned on what energy changes?
A standard flashlight with an incandecent bulb converts electrical energy into two different types of energy; light energy and heat energy.
What form of energy is given off by a flashlight?
A flashlight is given off light and heat energy once turn on.
When a flashlight is turned on where does the energy transformation takes places?
The electric energy will be transfered to light energy and heat energy once flashlight turn on.
How does the amount of energy in batteries in a flashlight compare to the total amount of energy given off byt the flashlight as light and heat?
All of the energy in the battery, or most of it, is eventually given off as heat and light.
What energy transformation are in flashlight?
it would be heat to light or chemical to electrical to light
What energy does a flash light have It has light heat and chemical Light because that's what it gives off Heat cause when turned on it starts giving heat and chemical because the battery consists of c?
The batteries in the flashlight store chemical energy. Once you turn the flashlight on, this chemical is converted into light and heat energy.
What types of energy can flashlights produce?
Flashlight produce light energy and heat after turning on.
What are the energy transformation that occur in lighted flashlight?
Chemical>light>Heat
What Energy Transformations are in a flashlight?
it would be heat to light or chemical to electrical to light
What is the energy transformation that takes place in a flashlight?
Chemical energy to electrical energy to light energy and heat energy.
When the flashlight is turned on electrical energy is is changed to which type of energy?
light and heat bitter one
