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Electric Bulb

In a bulb, el...

Question

In a bulb, electrical energy is converted into:

A

heat energy only

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B

mechanical energy

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C

light energy only

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D

both heat and light energy

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Solution

The correct option is D
both heat and light energy

When electric current flows through the filament made up of tungsten, it heats up emitting visible light. Hence, in a bulb, electrical energy is converted into both heat and light energy.

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