The filament of a bulb is usually a

Thin wire with many coils

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Thick wire with many coils

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Thin straight wire

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Thick strength wire

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Solution

The correct option is A Thin wire with many coils
Filaments in incandescent light bulbs are made of tungsten. When electric current goes through the filament, the filament glows. It may also be known as the electron emitting element in a vacuum tube. To make the bulb produce more light,the filament is usually made of coils of fine wire, also known as the coiled coil.

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