Multiple choice general knowledge science & technology

The filament element used in common electric bulb is __ ?

  1. wolfram

  2. carbon

  3. copper

  4. none of these
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A Correct answer
Explanation

Wolfram is the German name for tungsten (symbol W), the metal used in incandescent bulb filaments. Tungsten has the highest melting point of all metals (3422°C), allowing it to withstand the high temperatures needed to produce visible light without melting. Carbon and copper are not used for this purpose.

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