Question: A 3 - m - long, 0 . 3 - cm - diameter electrical wire extends across a room at 2 2 C . Heat
A mlong, cmdiameter electrical wire extends across a room at C Heat is generated in the wire as a result of resistance heating, and the surface temperature of the wire is measured to be C in steady operation. Also, the voltage drop and electric current through the wire are measured to be XXwhere X X and the current is measured to be A respectively. Disregarding any heat transfer by radiation, determine the convection heat transfer coefficient for heat transfer between the outer surface of the wire and the air in the room.
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