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. increasesB. decreasesC. remains unchangedD. may increase or decrease depending on the speed of rotation of the fan.

If an electric fan be switched on in a closed room, will the air of th

1.	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. increasesB. decreasesC. remains unchangedD. may increase or decrease depending on the speed of rotation of the fan.
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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. increasesB. decreasesC. remains unchangedD. may increase or decrease depending on the speed of rotation of the fan.

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