What is an electrical filament?

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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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What is a filament?

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 ( Full Answer )

What is filamentous cytoskeleton?

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 ( Full Answer )

What do filaments do?

Filaments all do different things depending on the type. Forexample, filaments within muscles do the actual work of themuscles.

What are cytoskeleton filaments?

Actin Filaments (Microfilaments) Microtubules Intermediate Filaments Those are the three major cytoskeleton filaments in eukaryotics cells.

What does a filament do in a flower?

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

Why is a filament coiled?

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.

What is filament transformer?

A filament transformer is a machine that supplies filament forelectron tubes. There are different types of filament transformers.

What are Intermediate Filaments?

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 ( Full Answer )

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 ( Full Answer )

What is a filament resistor?

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 ( Full Answer )

WHAT IS a filament transformer?

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 ( Full Answer )

Why is the filament inside an electric lamp made very fine?

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 ( Full Answer )

What are filamentous algae?

they are a type of plant. they are in a kind of pea pod plant formation and it eats nothing and nothing eats it!

What is a filament bulb?

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. ( Full Answer )

What are muscle filaments?

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 ( Full Answer )

What are filaments on the sun?

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

What is filament in a bulb?

The filament is the small coil that glows when the bulb is on. I believe its made out of tungsten

How the filament in electric bulb is made burning?

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 ( Full Answer )

How does argon increase life of filament in electric bulbs?

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.

What are filament fibers?

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 ( Full Answer )

Can you use a copper wire to make a filament of an electric bulb?

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!

What is filament coil?

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 ( Full Answer )

Which element are used as an electric heater filament?

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.

Why is a copper wire not used to make filaments of electric bulbs?

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.

Why tungsten is used for making filament of electric lamp?

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 ( Full Answer )

Why tungsten filament used in electric bulbs?

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.