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Electric bulb filament is made of

  • A.Copper
  • B.Aluminum
  • C.Lead
  • D.Tungsten

Answer: D

The filament of an electric bulb is tungsten.

It has the highest melting point of any metal, 3,422°C, so it can be run white-hot without melting; its high resistivity makes it glow at a modest current; and it is ductile enough to be drawn into a fine wire and coiled.

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