What is the filament of an electric bulb usually made up of?

A thin wire with many turns

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A thick wire with many turns

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A thin straight wire

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A thick straight wire

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Solution

The correct option is A A thin wire with many turns
The filament in a light bulb is made of a long, incredibly thin tungsten metal. Such a structure increases the amount of heat produced in Tungsten and hence, the brightness.

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Question 3

In an electric bulb, light is produced due to the glowing of

(a) the glass case of the bulb.

(b) the thin filament.

(d) gases inside the glass case of the bulb.

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