A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform throughout the room and heat is transmitted through a glass
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A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform throughout the room and heat is transmitted through a glass A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is [...]