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If the tungsten filament of a lamp has a cross-sectional are of 5x10-9 m2 how long must it be have a resistance of 120 ohms at 20 degrees Celsius?
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∙ 9y ago
If the tungsten filament of a lamp has a cross-sectional area of 5x10-9m2,how long must it be to have a resistance of 120 ohms at 20 degree celsius?
Wiki User
∙ 9y ago
Wiki User
∙ 11y agohahahha pasado nsana ako sa physics
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Which metal withstand at 2000 degree Celsius temperature?
tungsten . tungsten is the metal used for the filament of incandescent bulbs. it has a temperature over 3410 degrees celsius . atomic number- 74 . mass number- 184 . symbol-W
Is the resistance of a thermistor measured in degrees celsius?
resistance is measured in 'ohms'. A thermistor basically tells u how temperature affects resistance in a circuit, generally the higher the temperature (degrees) the less resistance
Would a 5555 degree Celsius boiling point turn to a liquid in a negative 50 degree Celsius freezer?
Yes, When I first Asked This Question on 11/15/12 I Just Couldn't Figure It Out But Then I found Out The Answer of "suppose these substances were placed in the freezer set to -50`c. Which substance would become a liquid?" The answer was tungsten!
What element is a solid at 1500 degrees celsius?
Yes iron is solid at 1500 degrees. Even though it is not mentioned whether it is 1500 degrees Celsius or kelvin, but Iron is solid at 1500 degrees because the melting point of iron is 1538 degrees Celsius.
Relationship between ohm and degree Celsius?
To convert ohm to degree Celsius is impossible. That would be the same as if you want to convert kilograms to voltage or liters to meters.
If the tungsten filament of a lamp has a cross-sectional area of 5x10 raise to -9 m squared how long must it be to have a resistance of 120 ohm at 20 celsius?
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Which metal withstand at 2000 degree Celsius temperature?
tungsten . tungsten is the metal used for the filament of incandescent bulbs. it has a temperature over 3410 degrees celsius . atomic number- 74 . mass number- 184 . symbol-W
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 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
What is the filament inside the bulb made up of?
Incandescent light bulbs have filaments which are made mainly from the element tungsten and/or alloys which include tungsten.Tungsten is the metal element used for the filaments in incandescent light bulbs.Experiments were made with different materials to use as the filament, including natural fibres, pure metals and alloys of different metals, to find the material which had the longest life whilst glowing brightly enough to give out visible light. The metal Tungsten was found to be the best, because of its high melting point (almost 3700 K) and good resistance to electrical current.For more information see the answer to the Related Question shown below.Carbonized cotton was originally tried, and had moderate success. However, the material that finally worked the best was a filament made of tungsten, which shone brighter and lasted much longer.It is made up of Tungsten which have an melting point of 3380 degree Celsius.
How hot does a filament lamp get?
Bulb filament can reach temperature from 3410 degrees Celsius to 6300 degrees Celsius. No it can't. I think you're totally mistaken about how hot a filament can get. First of all, the temperature of a filament can't go above it's melting point. Secondly, I read that Tantulum Hafnium Carbide has the highest melting point of any known substance at 4215 degrees C. Besides, bulbs have a tungsten filament which has a melting point of 3422 C. It's slightly possible that for some bulbs, they mix tungsten with something else to raise the melting point but since nothing has a higher melting point than Tantulum Hafnium Carbide, the filament can't possibly get hotter than 4215 C by being 6300 C.
Which metal has a melting point of over 3000 degrees celsius is used to make light bulb filaments?
The filament wire of an incandescent light bulb is a tightly-coiled wire made from Tungsten. Before it is coiled up it is long and thin.The element is always supported on two stronger wires made of another kind of metal which can withstand the intense heat inside the bulb.Another answerThere are many different kinds of light bulbs that use other metals! Just to name a few: Mercury(Hg), Tungsten(W), Sodium(Na).Tungestun
What is the freezing point of tungsten?
The melting point of Tungsten is 3,422°C (degrees celsius,) or 3695K (Kelvin.)The melting point of tungsten is3695 K (Kelvin)3422 °C (Celsius)6192 °F (Fahrenheit)
What temperature does a filament inside a light bulb reach?
Answer:The filament inside the light bulb reaches over 3000 degree Celsius.
What is the units of temperature coefficient of resistance?
The unit of temperature coefficient of resistance is ohm per ohm per degree Celsius or say resistance per resistance per degree Celsius.
What is the name of the element beginning with w with a melting point of 3 410 Celsius and a boiling point of 5660 Celsius?
The elements is Tungsten, the symbol for it is W.
Is there any metal that can sustain the temperature more than 4000 deg Celsius?
According to http://en.wikipedia.org/wiki/List_of_elements_by_melting_point, apparently not: The highest melting point is carbon (graphite) at 3675 degrees celsius; the highst melting point for a metal is 3422 degrees celsius for tungsten (wolfram).According to http://en.wikipedia.org/wiki/List_of_elements_by_melting_point, apparently not: The highest melting point is carbon (graphite) at 3675 degrees celsius; the highst melting point for a metal is 3422 degrees celsius for tungsten (wolfram).According to http://en.wikipedia.org/wiki/List_of_elements_by_melting_point, apparently not: The highest melting point is carbon (graphite) at 3675 degrees celsius; the highst melting point for a metal is 3422 degrees celsius for tungsten (wolfram).According to http://en.wikipedia.org/wiki/List_of_elements_by_melting_point, apparently not: The highest melting point is carbon (graphite) at 3675 degrees celsius; the highst melting point for a metal is 3422 degrees celsius for tungsten (wolfram).
Is it common to see tungsten in the gaseous state?
No. Because tungsten has a high boiling point of 5660 degrees Celsius before it can turn to its gaseous state. At normal room temperature,around 30 degrees Celsius, it is below its melting point of 3410 degrees Celsius, therefore it is more commonly seen as a solid
