light bulb

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Dodgydave

Joined Jun 22, 2012
8,677
The bulb is just a resistance wire coiled up, as the bulb heats up its resistance increases, limiting its own current, whereas an led is a silicon diode that needs a limited current.
 

Alec_t

Joined Sep 17, 2013
10,717
The resistivity of the tungsten wire used for the bulb filament increases with temperature. It is a fundamental physical property of tungsten.
The gas (if used) excludes oxygen so that the wire doesn't burn.
 

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RRITESH KAKKAR

Joined Jun 29, 2010
2,829
The resistivity of the tungsten wire used for the bulb filament increases with temperature. It is a fundamental physical property of tungsten.
The gas (if used) excludes oxygen so that the wire doesn't burn.
The gas (if used) excludes oxygen so that the wire doesn't burn.
what this mean sir?
how we find tungsten?

 

OBW0549

Joined Mar 2, 2015
3,144
I am now convinced Ritesh is a troll.
I'm on the fence about that; right now, my money's on "(word removed by moderator)."

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