which gas is filled in the electric bulbs to preserve the filament at high temperature
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inert gas which a mixture of mostly argonand some nitrogen, or sometimes krypton is filled in electric
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When we fill a bulb with an inert gas mainly with nitrogen or argon it decreases the vaporization of the tungsten filament as contrasted to operating it in a space. This produces higher temperatures and therefore it maintains the higher efficiency with less compression in filament life.
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