Multiple choice general knowledge science & technology

Assuming no transfer of heat in or out of a closed room, will a moving fan in the room increase or decrease the room temperature?

  1. Increase

  2. Decrease

  3. No Change

  4. Can I take a break now?
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a perfectly insulated closed room, a fan increases temperature. The fan's motor converts electrical energy to heat, and the air friction from the fan blades also generates thermal energy. While fans cool people by evaporation, they add net heat to a closed system.

Keep practicing — related questions