What is an electrical filament?
An electrical filament is a thread of metal, usually tungsten, which is used to convert electricity into light in incandescent light bulbs (as developed in 1874 by Alexander Lodygin and in 1878 by Joseph Wilson Swan, among others), and into heat in vacuum tube devices.
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In an incandescent light bulb (the kind that screws into a standard light socket), the filament is the piece of metal in about the middle of the glass bulb that glows and emits light and heat when electricity passes through it. It is usually made of tungsten, but originally was made of carbon. New …compact fluorescent and LED-based light bulbs do not really have filaments like incandescent light bulbs. Filament is a term also used in astronomy and biology for different things, but these uses are not as common as in light bulbs. (MORE)
filament is the source of light which gives to the plant to do a photosynthesis..
Filamentous cytoskeleton is the cellular structure within the cytoplasm in every cell that helps it to keep its structure, protect the cell and allows cellular motion (using appendages like flagella, cilia, etc.). It also plays a role in intracellular transport and cellular division. The cytoskel…eton is found in Eukaryotic and Prokaryotic cells. (MORE)
Filaments all do different things depending on the type. Forexample, filaments within muscles do the actual work of themuscles.
Actin Filaments (Microfilaments) Microtubules Intermediate Filaments Those are the three major cytoskeleton filaments in eukaryotics cells.
Each stamen has 2 parts the stalk, called the filament and the pollen producing organ called the anther. The Filament is the stalk of the anthers
A filament is coiled, because it will not receive power if it is inthe shape of a straight line. If a filament is uncoiled, only asmall portion of it will work.
A filament transformer is a machine that supplies filament forelectron tubes. There are different types of filament transformers.
You need to buy it from Cysero's shop. Go to the magical orb and buy it for like 35 dragon coins.
Intermediate Filaments (IFs) are part of a cells cytoskeleton along with Microfilaments and Microtubules. Intermediate Filaments are intermediate in size compared to MFs and MTs. They are also more durable and stable than the others. They are mainly used in cellular adhesion and other specialized fu…nctions in cells. (MORE)
Is it a chemical or physical change when the filament of a light bulb glows when an electric current flows through it?
It is a physical change. When you supply electricity, the electrons jump to higher energy state. When they come back to their level, it emits energy which falls in the visible region of light. The atoms of the filament (Tungsten) are not going through any change, that changes their chemical pro…perties. Tungsten, still remains tungsten! (MORE)
Way back in the days of fire bottles (vacuum tubes) the filament or ballast resistor served two purposes. 1) To limit inrush current (filaments and incandescent lamps have a very low resistance when cold). 2) To adjust / control the operating voltage of a string of filaments in series. The filament …in a vacuum tube heats the cathode material to help electron emission. (MORE)
In vacuum tube devices, one electrode of the tube (the filament)needs low voltage at relatively high current, while another one (the plate)needs a high voltage at relatively low current. It's hard to build a singlepower supply to provide both of these, so the filament is usually supplied from itsown… separate transformer. Nobody has worried about things like this since a short time aftertransistors came along. (MORE)
The filament is fine so that its electrical resistance can be quite high. It is also long, for the same reason. Usually it is coiled up to fit the length in the lamp. The heating effect of electric current is proportional to the current squared, time the resistance (I*I*R). Most of the effect is …due to the current. The current through the filament must be limited to stop it melting. Adding resistance will do that. Taking resistance away increases heating. So, a low energy lamp has a very thin filament and a high energy lamp will have a thicker filament. (MORE)
they are a type of plant. they are in a kind of pea pod plant formation and it eats nothing and nothing eats it!
Its temperature increases. It continues to radiate a spectrum of light ("black body") representative of its new higher temperature. At some level of current, we see it as a source of visible light.
A bulb that is lit up by using a piece of very thin wire coiled round that has electricity flowing through it very fast which causes it to heat up and is so hot that it glows white. This is why filament bulbs are not very efficient as they produce so much heat which is just not needed and is wasted.… (MORE)
A filament is part of a bulb.I will give you a full sentence. "The filament of a bulb is the part that gets hot and produces light"
Incandescence. The filament is heated by the electricity moving through it, this causes the filament to heat up, and the heat causes the familiar glow.
Element of electric heaters and filament lamp are made of high resistivity materials this is done to the filament length?
Not too sure bout it babe. Wish I knew the answer. Will get back to you if I do, yea mate?
the simple answer is resistance, the filament is a very fine wire (usually tungsten) that heats up and glows when power is applied
If one were examine any type of muscle cell at the molecular level, what one would find is some kind of structured array of very thin (nano-scale) chains of protein called myofilaments. These are the smallest contractile elements in muscle tissue. There are two kinds of myofilaments: the thin actin… filaments (~7 nm diameter), and the thicker myosin filaments (~16 nm diameter). In the case of skeletal and cardiac muscle these filaments alternate many times in parallel to the axis of muscle contraction. During muscle shortening, the job of myosin is to latch on to points along the actin filaments and pull them closer toward each other. During relaxation and muscle lengthening the gap between adjacent actin filaments increases. The muscle cells that are responsible for contracting sphinctors, blood vessels, bronchioli, the iris, and providing gut motility are a bit different. These are called smooth muscle cells. Instead of having a regular array of filaments parallel to axis of force-generation, they are arranged irregularly in a sort of criss-cross fashion that 'squishes' the cell as it contracts. (MORE)
A light bulb transfers 360 J in one minute from the source of electricity to the filament What is its power?
there are 60 seconds in a minute therefore you divide 360 by 60 and get 6w.. 360/60=6 . 6w is the answer.
The filament of a light bulb overs enough resistance to current flow, that the filament heats up so much that it will glow and produce visible light.
What happens to the electrical energy carried by the current when it passes through the filament of a bulb?
it stays there. the electricity travels back and forth through the filament until you turn the lighbulb off.
What happens if you put metal in a kettle if it both does and does not touch the metal filament at the bottom of an electric kettle?
A rainbow shoots out of the spout and the kettle takes the form of a unicorn!
when sunspots fade away, they usually leave behind a weak magnetic imprint of opposite polarity to that of the sun's global field at the cycles start. by Amanda Reyes
Why does a bulb not light if it is connected only to the positive point of the cell although electricity has passed through the filament?
This is because electric current needs a complete circuit or path to flow through so the current will not have anywhere to go from the negative end of the cell in the scenario that you described.
The filament is the small coil that glows when the bulb is on. I believe its made out of tungsten
Resistive Heating, as current passes through the filament power is dissipated from the filament in the form of heat, they are made of Tungsten which has a melting point of 3380 degree Celsius. And since the interior of the bulb contains very little to no oxygen, usually filled with argon or similar… type gas. The filament cannot burn, but will degrade over time to the point where it "burns out" but in reality the filament just breaks (MORE)
When the filament of a bulb becomes hot, it can react with the air around it, causing it to change size and / or shape, breaking the filament. Argon is unreactive, and so when this gas surrounds the filament, it prevents it from reacting, so preserving it for a longer period.
I'm not an expert, however broadly speaking there are two kinds of fibers used in making textiles. Relatively short fibers - such as wool fibers are categorized as "staple fibers." Fibers that are continuously extruded (and are therefore available in any length) are filament fibers. Silk, which… has long fibers, but not quite any length falls into its own category. (MORE)
No, copper wire cannot be used to make the filament of anelectric bulb as copper wire has very low resistance. Therefore,the bulb will not glow if current is passed. . It would also melt - the filament has to be white-hot to be anyuse!
The heater element is thicker wire, and has lower resistance. It still has enough resistance to glow red hot (producing heat) but does not glow white-hot and very brightly like a light bulb filament. Also, it lasts almost indeifnitely. whereas the light bulb filament has a finite life - it will "bur…n out" sooner or later. (MORE)
it is the coiled wire that heats up and gives off light in a incandescent (ordinary) light bulb.
What is the electrical power produced in a filament of a light bulb if a voltage of 12v allows a current of 4 amps to flow across?
A few comments first of all. Current flows 'through', not 'across'. There is no such thing as 'electrical power'; power is power -period! The symbol for volts is 'V', not 'v'. To answer your question, you can find the power of the lamp using the equation: P = U I where: P = power in watts … U = potential difference in volts I = current in amperes (MORE)
How does an 25w compact fluorescent bulb provides the same amount of light as a 100w filament bulb but use less electricity?
It uses modern technology to give better efficiency. A filament bulb has an incandescent (hot) piece of tungsten wire, which produces light but also heat. A fluorescent bulb uses a different process to produce more light and less heat.
It is the type and size of the wire. Note that the filament is very tiny compared to the size of the supply wire. The tungsten filament gives off light rather than burning up because of its chemical composition.
Inside a heater element is aluminium oxide for insulation and it surrounds a nickel resistance wire.
Nichrome wire is commonly used for resistance wire for heater elements and it is a non-magnetic alloy of two elements nickel and chromium. It has high resistance and resists oxidation. The electrical resistivity is about 65 times that of copper.
The filament in a light bulb forms resistance so that heat can happen. The electricity then converts to light energy and heat energy so that the light will shine.
The equation that you are looking for is I = E/R. Amps = Voltage/Resistance in ohms.
Because the filament is in effect a resistor. Copper is too good aconductor to provide resistance to the current, and would simplyallow the current to complete the circuit. The light is generatedby the filament glowing as it heats up in resistance to thecurrent. Tungsten is a much better resistor.
When electric flows through the metal filament of a high light bulbs what is electric energy transformed too?
Heat and light. The metal filament heats up to the point ofincandescence in the visible part of the spectrum.
Because it has a very very high melting temperature: 6191F, 3422C.However it is also very difficult to work with, so early light bulbs used carbon formaking the filament instead. Around the year 1900, carbon filaments were replaced with tantalumfilaments. It was not until about 1910 that it became p…ractical to make tungstenfilaments. (MORE)
That is the result of resistance in the wire. In energy terms, some of the energy in the electric current is converted into heat.
What is electrical energy converted into when electric current flows through the metal filament of a light bulb?
Electrical energy is converted into light and heat when electriccurrent flows through the metal filament of a light bulb.
When electrical current flows through the metal filament of a light bulbelectrical energy is coverted to?
When electrical current flows through a lightbulb (whether it'sCCFL, halogen, or incandescent), the trade-off is light and heatenergy.
Tungsten is used because it has a high melting point and maintainsa high strength at high temperatures - like those required to makeit hot enough to give off light as a filament in an electric bulb.
It is a physical change brought about by the exitation of moleculesproducing heat and light. A general rule of thumb is that aphysical change can be repeated on an article and chemical changecannot. Remove the current from a filament and it is still afilament.