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How much heat energy will a 40W light bulb give out in 3 minutes?
Wiki User
∙ 11y ago
Joules = watts x seconds. Just convert the minutes to seconds, then multiply.
Wiki User
∙ 11y ago
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How does a flashlight work?
A flashlight has a power source (usually ordinary batteries), a light source of some sort (a light bulb or LED, for example), and some electrical wiring to connect them, with a switch to turn it on and off. The power source makes the light source give off light.
Senses light and converts it into electricity?
Solar cell is the device which converts the light energy to electrical energy it convert photons to dc energy for more information you can visit the several sight which can give you information about solar cell. it is semiconductor device fabrication is done by using silicon p-n junction.
What will happen if instrument with 110v supply voltage give 220 v supply?
the appliance will burn out, eg if it is a 60 watt light bulb it will burn at 120 watt for as long as the fillament can take it and that wont be long
How is an emission spectrum of an element generated?
All hot solids or dense enough gases emit black body radiation. Gases that are not very dense are are cold absorb particular wavelengths while gases that are not dense but are hot produce their characteristic emission spectrum.
How do you change a rear turn signal bulb in a 1990 Buick Reatta?
Open the trunk lid and pull the upholstery from the rear of the trunk. You will find white and black plastic wing nuts. Remove the white ones on the side you are working on and swing the lens assembly up. If you don't like standing on your head to work on the lights, remove all of the white and black wing nuts and pull the tail light assembly to the rear. Replace the bulbs. Jack
Does a light bulb give off radiant or thermal energy?
THe light bulb emits light while in the process heat in the infrared spectrum is emitted.
What type of energy does a light bulb give off?
It makes thermal energy (the heat), radiant energy (what we see), which is in essence more or less the same manifestation.
Can energy saving light bulb charge a phone?
No. An energy saving light bulb is just a light bulb, and can't charge anything. The reason it's called an "energy saving" device is that it can give you the same amount of light while using less electrical energy than older bulbs used.
What uses light energy to make electricity?
to give load from bulb to ballas
Does a high watt bulb give more energy than a low watt bulb?
More watts means it uses more energy per second (watt is a unit of power). If it is a light-bulb of the same type of technology, the higher-watt light bulb would also give off more light.
Why does a non energy saving light bulb give off more heat than an energy saving light bulb?
Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.
What is the job of the cells and wires and bulb and switch in a torch?
The job of a bulb is to give off heat and light energy
Why does energy saver give more light than electric bulb of same watt?
Both bulbs output the same amount of energy. The difference is in how much of that energy is output as heat vs the energy output as light. In a standard incandescent light bulb about 10% of the energy is output as light while the other 90% is output as heat. This makes the bulb only 10% efficient. For a florescent bulb the output of light is about 50% and the other 50% is output in heat. This means that a fluorescent bulb outputs five times as much light for the same wattage as a standard incandescent bulb, hence you can get the equivalent of 100 watts of light output for only 20 watts of electricity.
Does a light bulb give out heat and sound energy?
An incandescent bulb in an AC circuit does give off both heat and sound energy; the heat because the filament is hot, and the sound because the varying voltage results makes the filament vibrate. Generally it's not a very LOUD sound, but bulbs which are about to burn out often emit a noticeable buzzing.
How much electrical energy does a 75 W light bulb use if it is on 4 hours?
75W means bulb which give 75W power when connected to domestic light. Power is nothing but energy per second. Thus energy consumed by bulb can be calculated as follows. E = 75*60*60*4J = 1080kJ
Can a pinwheel produce enough energy to give to a Christmas light bulb?
No, unless you hook it up electronically then it will probably not produce enough energy to light it up as bright or as long as and outlet.
How much energy to produce one light?
Lights vary tremendously in power, but the normal incandescent bulb takes 100 watts. Low energy bulbs can give the same light at 20 watts
