Why does a metal filament bulb glow when electric current passes through it?

Question

Why does a metal filament bulb glow when electric current passes through it? — Exam MCQ

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B. The filament offers resistance, converting electrical energy to heat and light — The correct choice is The filament offers resistance, converting electrical energy to heat and light. It follows from the basic electrical relationship between voltage, current, resistance, charge or electrical energy described in the question.

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A. The filament conducts current with zero resistance

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C. A chemical reaction in the filament produces light

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D. The filament is magnetized by the current

Why does a metal filament bulb glow when electric current passes through it?

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