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No. It may be close to 100% (90-something percent) but since it is not a superconductor, it emits some heat too.

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Q: Do LED lights have a 100 percent lumen efficiency?
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Why may an electrical heater be 100 percent efficient?

They can never reach that level of efficiency.


Dividing the actual yield by the theoretical yield and multiplying by 100 indicates reaction efficiency and is known as there?

Percent Yield


Why are electric heaters 100 percent efficient?

All the power absorbed by the heating element and the connecting wire is converted into heat, leading to the 100% efficiency figure.


How bright is an led bulb marked 100 lumen?

Brightness is measured in lumens so the bulb has a brightness of 100 lumens. The electrical power the bulb uses is measured in watts. The efficiency of a bulb is expressed in the number of lumens produced per watt of electric power.


What is brighter 2000 lumen watt bulb or a 1500 lumen bulb?

This question is ill posed. Lumen is a unit of measure for how much light comes from the lamp Watt is a unit of measure for how much energy is used by the lamp If the question were; "Which is brighter, a 2000 lumen bulb or a 1500 lumen bulb?" then the answer would be: The 2000 lumen bulb. I think the relation ship between lumen and watt is something like: Incandecent bulbs are 15w/lumen Flourecent bulbs use 40w/lumen LED bulbs are 70w/lumen The way to show the watt and lumen relationship is usually lumens (amount of light) per watt (energy consumption). This is like gas in your car (Miles or KM per Gallon or Liter). Incandescent bulbs have a maximum luminosity of 52 lumens/watt. Fluorescent bulbs range from 46 lumens/watt (CFL) to 100 lumens/watt (T5 and T8 tubes) LED bulbs range from 29 lumens/watt (older, low efficiency) to 100+ (XCree) and they are getting better.

Related questions

Does a refrigerator have 100 percent efficiency?

nothing has 100% efficiency.


Can a car have a 100 percent efficiency?

No. Nothing mechanical can ever have a 100% efficiency by any physical evaluation.


What would cause the calorimeter efficiency to be less than 100 percent?

why is the efficiency of a calorimeter less than 100%


How does the output work compare to the input work for a machine that has an efficiency equal to 100 percent?

If a machine has 100 percent efficiency, the output work = the input work. That's actually basically what the efficiency of a machine is - output work / input work * 100.


Why can efficiency never can be 100 percent?

The laws of thermodynamics imply that there will always be some loss of efficiency.


When efficiency is at 100 percent it is known as what with power factor?

"Unity"


Why is is that is impossible to have a 100 percent efficiency?

Cuz nuffin is purfect


What is the formula to calculate percent efficiency?

(work out/work in) x 100


What is the efficiency of a machine that requires 100 joules of input energy to do 35 joules of useful work?

The machine efficiency is 35 percent (35/100).


Why a normal machine could not have the mechanical efficiency of 100?

Because there is always going to be friction, the efficiency of any machine will always be less then 100 percent.


What would a machine that had 100 percent mechanical efficiency be called?

an ideal machine


How can convert efficiency to percent?

Work done = (force * distance)>Efficiency (%) = (Work done output / Work done input) * 100