A bulb in an electric circuit glows due to:

Magnetic effect of current

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Heating effect of current

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Chemical effect

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Conduction of current

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Solution

The correct option is B Heating effect of current

A bulb has its own resistance. According to Joule's heating effect, certain heat is produce in the bulb when a current flows through it. Due to the heating effect of current, the filament of the bulb gets heated to a high temp and it starts glowing.

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