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/calAns:15.24 Cplzz help asap

Radhika Batra , 11 Years ago

Grade 11