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A room at 20 C is heated by heat transfer of resistance 20 ohm connected to 200 Volt mains.The temp is uniform throughout the room and the heat transmitted through a glass window of area 1 m^2 and thickness 0.2 cm.Calculate temp. outside.Theermal Conductivity outside is 0.2 cal/m C sec and mechanical equivalent of heat is 4.2 J/cal Ans:15.24 C plzz help asap


A room at 20 C is heated by heat transfer of resistance 20 ohm connected to 200 Volt mains.The temp is uniform throughout the room and the heat transmitted through a glass  window of area 1 m^2 and thickness 0.2 cm.Calculate temp. outside.Theermal Conductivity outside is 0.2 cal/m C sec and mechanical equivalent of heat is 4.2 J/cal


 


Ans:15.24 C


 


plzz help asap


Grade:11

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