electrical power consumed by the hot

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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6. An electric hot plate is placed in a room which is maintained at a temperature of 297 K.
The plate is maintained at a temperature of 403 K and has an emissivity of 0.8. If the plate
surface resembles a circular disc of diameter 250 mm, electrical power consumed by the hot
plate will be;
a. 22 W
b. 65 W
c. 75 W
d. 86 W
Transcribed Image Text:6. An electric hot plate is placed in a room which is maintained at a temperature of 297 K. The plate is maintained at a temperature of 403 K and has an emissivity of 0.8. If the plate surface resembles a circular disc of diameter 250 mm, electrical power consumed by the hot plate will be; a. 22 W b. 65 W c. 75 W d. 86 W
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