A 50 mm*45 mm*20 mm cell phone charger has a surface temperature of Ts = 23°C when plugged into an electrical wall outlet. The surface of the charger is subject to a free convection heat transfer coefficient of h = 4.5 W/m^2.K with the room air having a temperature of 15°C. By assuming steady cpnditions and neglecting radiation, the electric power of the charger is:

A 50 mm45 mm20 mm cell phone charger has a surface temperature of Ts = 23°C when plugged into an electrical wall outlet. The surface of the charger is subject to a free convection heat transfer coefficient of h = 4.5 W/m^2.K with the room air having a temperature of 15°C. By assuming steady cpnditions and neglecting radiation, the electric power of the charger is:

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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