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A light bulb works by passing an electric current through the filament, which is usually made from a high resistance substance such as tungsten. When the current flows through, the filament glows which produces the light. When it burns out, no electricity passes and no glowing occurs.
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How does the filament in a light bulb work?
it is made of tungsten and is a resistor when current flows thru it it heats up and glows
In a light bulb what is energy transformed in to?
In typical light bulbs, or incandescent bulbs, the resistance to the current directed through the filament causes the filament to heat up, thus radiating light. The glass bulb around the filament is vacuum sealed to remove oxygen, which would rapidly oxidize and destroy the super heated, ultra thin filament. there are variations of this technology in which the bulb is not a vacuum, but is instead filled with different gasses surrounding the filament, which allows the filament to burn even hotter, creating more light. fluorescent bulbs work by creating a reaction between mercury vapor and phosphors. electric current excites the mercury atoms, which then release ultraviolet light. The ultraviolet light causes the phosphors to fluoresce, which creates light in our visible spectrum.
What happens when a light bulb is broken in a series circuit?
In that case, the entire circuit won't work.
Why is it the bulb which are about to get busted do so only after lightning for a while after turning the power on?
The tricky part of getting a traditional light bulb to work is to keep the wire filament intact. Removing the air, more specifically the oxygen in the air, helps to keep the wire filament from burning-out too quickly. Using an inert gas inside the bulb can also help. Typically, if oxygen gets into the bulb, it will not have a noticeable effect until electricity is passed through the wire filament, when you turn it on. When this scenario occurs, the wire filament heats up to a very high temperature with then reacts to the oxygen that entered the light bulb. This typically results in the wire filament vaporizing, sometimes with glowing embers.
How a light bulb works?
The filament in the bulb (the thin tungsten wire inside) is heated with electricity and then it lights up. That is how incandescent bulbs work. (the old kind) CFL's (Compact Fluorescent Lights) work by a gas (possibly argon) is electrically charged and then the atoms give off light.
How did Edison's light bulb work?
Electricity goes through the "electrical foot contact", heats up the wires (connected to the tungsten filament) therefore lighting the light bulb up. The filament is supported by wires. The glass mount holds up the two wires connected to the filament. That is how I think the light bulb works. Have a look.
If the filament of the bulb is broken would the circuit be complete?
If the bulb's filament is broken, the whole circuit becomes open. If the bulb is in a series circuit or is the only bulb, the electricity would no longer flow. If the bulb is in a parallel circuit, along with other bulbs, then only the blown bulb would go out, and the other bulbs would still work.
How did Thomas Edison's light bulb work?
Electricity goes through the "electrical foot contact", heats up the wires (connected to the tungsten filament) therefore lighting the light bulb up. The filament is supported by wires. The glass mount holds up the two wires connected to the filament. That is how I think the light bulb works. Have a look.
What is the hypothesis to how does a light bulb work?
When a current is passed through a thin wire filament it gets hot. Insulate the filament in a glass envelope with no air, and the filament glows brightly.
Why do your turn signals blink fast and then work properly?
You probably have a bulb going bad. The filament in the bulb is broken and sometimes it makes contact and sometimes it doesn't.
1997 f 150 and Tail lights and all the signal lights work execet for rear right signal light This light works as a tail light but it will not signal?
There are 2 filaments in the tail light bulb. One filament lights for the tail light and stays on as long as you have the tail lights on. The other filament only works when either the turn signal is on, or the flashers, or the brakes are applied. Have some one get in the truck and apply the brakes and see if the right rear brake light comes on. If it doesn't, then the filament is broken inside the bulb and you will need to go get a new bulb. Most pickup you just remove a few screws and gently put the plastic lens off and then either twist to remove the bulb or just pull straight out depending on the base of the bulb from the housing. Once you get the old bulb out hold it up to the light and nomally you will see one filament is still connected and the other filament will be broken. You can always go get the bulb first and see what the base looks like to determine if it's a twist and pull or just a pull style bulb.
Why doesn't a bulb work when the filament inside is broken?
The filament in a light bulb (the part that glows bright) is usually made from a metal called tungsten which has such a high melting point that it can heat up as electricity is passed through it and give off light without melting at the high temperatures produced. However, at high temperatures, tungsten can also burn - so if a current is passed through the fillament under normal conditions, it will heat up, glow, but because it is so hot, it will react with the air around it and either vaporise or burn, becoming useless. To prevent this happening, the filament is enclosed in a glass bulb. In the bulb all the air is removed and another gas is put in instead. In cheap bulbs this is usually nitrogen, but more often the gas used is argon. Neither of these gases will allow burning, and so the filament can glow brightly when electricity is passed through it without the risk of it burning. However, if the glass bulb is broken - or even if it is simply cracked - air containing oxygen can get in and so when you switch on the bulb the hot filament burns away rapidly blowing the bulb.
Why doesn't my front driver side marker light work with lights on but works with flashers?
If the bulb is a double filament bulb, one of the filaments is burned out.
How does the filament in a light bulb work?
it is made of tungsten and is a resistor when current flows thru it it heats up and glows
How does electricity work in light bulbs?
The wiring inside the light bulb is very thin (the filament) and glows when heated. The current through the thin wire heats up the filament wire so that it will glow. See the related link 'How Light Bulbs Work'.
Why are filaments of bulb coiled?
They have to be coiled in order for them to be long enough to produce enough heat, which produces the light in a small space. Otherwise the light bulb would have to be much larger.A filament bulb is coiled to allow a much longer filament to fit into a tiny space. It also reduces the amount of gas which flows across the inner portion of the filament.
Can a light bulb work with just oxygen instead of argon?
No. Light bulb filaments become extremely hot when in use, and oxygen, which is highly reactive, would cause the filament to burn away in a matter of seconds. Argon is used because it is inert, and thus will not react with the filament.
