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If an electric fan be switched on in a c...

If an electric fan be switched on in a closed room, will the air of the room be cooled? If not, why do we feel cold?

A

cooled

B

heated

C

maintains its temperature

D

heated or cooled depending on the atmospheric pressure

Text Solution

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The correct Answer is:
B
When the electric fan is switched on, the electric energy is converted into mechanical enerty, which is turen is converted into heat energy. It is so because the rotainty fan in an a closed room will increases the kinetic. Energy of translation of molecules of air in the room and hence, temperature of the room increases.
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