A room heater and an electric bulb both convert electrical energy to heat, but why does only the bulb emit significant visible light?

Question

A room heater and an electric bulb both convert electrical energy to heat, but why does only the bulb emit significant visible light? — Exam MCQ

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A. The bulb's filament reaches a higher temperature, emitting visible light — An incandescent bulb has a filament heated to a very high temperature, so it emits visible light as well as heat. A room heater is designed mainly to transfer electrical energy as heat.

rrbjepyq.in · Answer

B. The heater uses magnetic effect instead of heating effect

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C. The heater is made of a different material

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D. The circuit design is different

A room heater and an electric bulb both convert electrical energy to heat, but why does only the bulb emit significant visible light?

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