Consider a room that is initially at the outdoor temper- ature of 20°C. The room contains a 40-W lightbulb, a 110-W TV set, a 300-W refrigerator, and a 1200-W iron. Assuming no heat transfer through the walls, determine the rate of increase of the energy content of the room when all of these electric

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Consider a room that is initially at the outdoor temper-
ature of 20°C. The room contains a 40-W lightbulb, a 110-W
TV set, a 300-W refrigerator, and a 1200-W iron. Assuming no
heat transfer through the walls, determine the rate of increase
of the energy content of the room when all of these electric
devices are on.
Transcribed Image Text:Consider a room that is initially at the outdoor temper- ature of 20°C. The room contains a 40-W lightbulb, a 110-W TV set, a 300-W refrigerator, and a 1200-W iron. Assuming no heat transfer through the walls, determine the rate of increase of the energy content of the room when all of these electric devices are on.
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