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A room at 20 degree celsius is heated by heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform and it is transmitted by a glass window of area 1 m square and thickness 0.2 cm. Calculate the outside temperature? (Kglass=0.2/•c)

A room at 20 degree celsius is heated by heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform and it is transmitted by a glass window of area 1 m square and thickness 0.2 cm. Calculate the outside temperature? (Kglass=0.2/•c)

Grade:11

4 Answers

souradeep
27 Points
6 years ago
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souradeep
27 Points
6 years ago
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P
13 Points
6 years ago
Q/t=i=V/R=200/20=10 amperesQ/t=K×area×temperaturedifference/thicknessi=0.2per degree celsuis×1m×T-20degree celsius/0.2cm10=100(T-20)T=20.1
souradeep
15 Points
6 years ago
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