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How many joules of energy does a 100 watt light bulb have?

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2013-04-22 02:39:45
2013-04-22 02:39:45

welll it really depends on the volasity of light energy but from my calculatios it is 900

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there are 100 joules in an energy efficient light bulb 75 joules go towards the light and 25 joules go towards the heat


1) The power use of bulbs is specified in units of power, not energy. In other words, watts - which means joules per second. 2) Light-bulbs come in different capacities. 3) It is incorrect to say that the energy (or power) "is in" the light-bulb. The light-bulb simply transforms one type of energy to another, using electrical energy which is NOT stored in the light-bulb.


60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).


Watt means joules/second. It refers to the amount of energy a device uses, in this case. Multiply the power (in watts) by the time (in seconds) to get the energy (in joules).


It's 100 watts times 3600 seconds, that's 360,000 joules of energy. A joule is 1 watt for 1 second.


100 watts running for 60 seconds uses 100 x 60 Joules of energy. A Joule is the same as a watt-second.


Every second a 150 Watt bulb converts 150 Joules from electricity into heat and light. The number of Watts tells you how many Joules pass per second.


100 watts means 100 Joules/Second. So in 24 hours, the bulb would use 24*60*60*100 Joules. so that's 8,640,000 joules


Almost 90 % of electrical energy provided to an incandescent light bulb goes as heat and rest as light. A 100 Watt bulb puts out 100 Joules of heat per second. So - for one minute it would put out 6000 Joules (100 Watts X 60 seconds). 1 BTU (British Thermal Unit) of heat = 1055.056 Joules. So a 100 watt bulb, burning for one minute would put out 5.68 BTUs of heat. ( 6000 Joules / 1055.056 Joules) = 5.68 BTUs. Same bulb burning for one hour would generate 341 BTUs of heat.


A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.


You can't calculate how many volts with that information; you could calculate the energy - 60 watts for 15 minutes is equivalent to 54,000 joules.


1 watt= 1 joules/1 sec60 w = 60joules/minuteor=3600joules/hour


A light bulb produces light on demand when it is connected to a sufficient source of electrical energy. Many types of light bulbs also produce heat as a byproduct.


This is a very good question. A Watt is a unit of power, or energy with respect to (divided by) time, and is defined as 1 Joule per second. A 100 Watt light bulb consumes energy at a rate of 100 Joules (J) per second (s). There are 60 seconds in every minute, and 60 minutes in every hour. So also, there are 3600 seconds in every hour (60 X 60). 100 J/s X 3600s = 360,000 J (the s cancels out in the division) Your bulb consumes 360,000 Joules in one hour.


Your question is rather like asking "How many miles per hour do you do in a week?" You don't consume watts over time, it's a measure of how many joules of energy you consume over time.


Yes, there are many examples. Electrical energy to light energy (light bulb). Mechanical energy to heat energy (rub your hands together). Chemical energy to light energy (a glowstick), and on and on.


Joule is the unit of energy. Watt is the unit of power. One Joule provides one Watt for one second. A 100 Watt lamp uses 100 Joules per second.AnswerPower is the rate of doing work. Work is measured in joules, so power is measured in joules per second. However, in SI, a joule per second is given a special name: the watt. So a 100-W lamp consumes 100 J of energy per second.


About 40 mega Joules of energy.


Those numbers describe the power used by the two bulbs, in other words how many joules of electrical energy they use per second. The 100 watt bulb uses 40 watts more.


With current (as of 2013) technology, from best to worst efficiency, the light bulbs are basically:LED light bulbs (most efficient)Fluorescent lightsThe old-fashioned incandescent lights (worst)


50.75 joules of energy equates to about 12.1 calories.



In a traditional light bulb, the electrical energy is converted to heat. The filament gets hot and emits the thermal energy as light. The electrical energy itself is not directly converted to light but goes through the thermal energy stage.There are many kinds of lights and more complicated processes which are not described in this brief answer.


Energy (Joules) is equal to the mass multiplied by the speed of light squared (E=mc^2).




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