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How does the amount of energy in the batteries of a flashlight compare to the total amount of energy given off by the flashlight as light and heat?
Wiki User
∙ 15y ago
For a normal battery,for example,AA,AAA,CR123A,CR2 it can just work alittle time and not steady. But for charging batteries,it is steady and can be used fora long time,for a normal 18650 battery,with 70 LM, it can be used for 2-3 hours the LED flashlight is excellent,here is an experience i can share with you: It was a night,when i come bace to my home late,but that day was very special,because it was very dark everything not as usual,then when i went to a shop,i was told our power cut.How worried i was because i can do nothing.Hardly have i reached my house i found it was very bright.My housemate are using her LED flashlight,how happy i was,still i can do everything as usual.She told me she bought from her friend 8 years ago who work in a manufacturer and make LED fllashlith,he said the LED recharging flashlight using special ulria bright white LED,LED light source is the best light source in the world,it is environment protect,long use time (about 3 times)than any other light(incandescente lamp,mecury lamp).and power save,safe and solid performance,realy excellent.And then it was working as the first ,high bright.Sometimes she took it to travel and Camping, climbing, fishing, and other outdoor sports and so on.It just recharge for 4 hours and can charge more than 2 hours.He just need to recharge indoor and then took it is ok. I was so attracted by this LED flashlight, so then i bought one too.Excellent!!!
Wiki User
∙ 15y ago
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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.
How does the amount of energy in the batteries compare to the total amount of light given off by the flashlight?
Well more chemical energy in a battery means more energy can be converted to light energy. I believe that the light will last longen and\or be brighter.
How much energy does a flashlight have?
None, that's why you use batteries
How could you use a flashlight to test two different brands of batteries to see which brand had more energy?
Well what you would do is you would put the first brand of batteries in the flashlight and you would time how long the batteries lasted and right it down . Then put the second brand of batteries in the flashlight and turn on the flashlight and time the flashlight and see how long the batteries lated and wright it down and you have your answer .
How does the amount of energy in the batteries in a flashlight compare to the total amount of energy given off by the flashlight as light and heat?
There is more energy in the battery than that given off as light and heat for two reasons. 1) Some energy is lost due to resistance in the battery. As current flows, energy is lost to heating of the battery due to this internal resistance. 2) As the battery operates, the voltage falls until it is too low to heat the bulb to incandescence. Yet energy remains in the battery, but this last energy is at too low a voltage to be useful.
How does the amount energy in the batteries in a flashlight compare to the total amount of energy given off by the flashlight as light and heat?
There is more energy in the battery than that given off as light and heat for two reasons. 1) Some energy is lost due to resistance in the battery. As current flows, energy is lost to heating of the battery due to this internal resistance. 2) As the battery operates, the voltage falls until it is too low to heat the bulb to incandescence. Yet energy remains in the battery, but this last energy is at too low a voltage to be useful.
How does the amount of energy in batteries in a flashlight compare to the total amount of energy given off by the flashlight as light and heat?
There is more energy in the battery than that given off as light and heat for two reasons. 1) Some energy is lost due to resistance in the battery. As current flows, energy is lost to heating of the battery due to this internal resistance. 2) As the battery operates, the voltage falls until it is too low to heat the bulb to incandescence. Yet energy remains in the battery, but this last energy is at too low a voltage to be useful.
Is a flashlight battery auto potential or kinetic?
The actual process of flicking the switch of the flashlight is kinetic energy, as there is movement involved. However, when the flashlight is now turned on, it will be producing light energy.
Can the amount of radiant energy that shines out of a flashlight exceed the chemical energy stored in the batteries?
No. That would be getting more energy out of something than what's been put in there in the first place. As far as we understand the universe, that just isn't possible.
What does the chemical energy stored in the batteries change into when the flashlight turns on?
Chemical energy stored in a battery changes into electrical energy.... Not so complicated
How is energy transferred through a flashlight?
A flashlight converts the chemical energy stored in batteries into light and heat.most of the energy is converted to heat.Only a small percentage of the original energy in the battery is converted into light energy. -answered by:11 yr old gurl
Is a flashlight good model for suns light energy hit earth?
Flashlight is not good model to test sun light hit earth. The light of flashlight is too small energy to compare sun light.
