Question

what do we call to the wire in the bulb which glows when current is passed

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Answer 1

Answer:

It is known as the filament of the bulb

Explanation:

Answer 2

Explanation:

The leading wire is usually made with conductors such as copper and aluminium, therefore have less resistance than the filament which is usually made with tungsten and has a high resistance.

Due to this the power lost P =I 2 R is greater for filament which is visible as light(and also heat).