Entry Test MCQ :: Current Electricity

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Which one of the following materials is useful for making bulb filaments?

[A].	constantan	[B].	nichrome
[C].	copper	[D].	tungsten

Answer: Option A

MUHAMMAD ABDULLAH said:

NO NO IT IS WRONG BCZ WE LEARN DAT BULB FILMNT IS MADE OF TUNGSTEN

Gayasch said:

Its totally wrong Up to our level we read that filament is of tungsten