- A conductor transfers heat of 3000 Ja in 6 seconds. Given cross it's length of 20 cm Hat it's cross-sectional area A is 550m². Determine the thermal conductivity of the material if the temperature difference acroSS the ends is 67°C.

- A conductor transfers heat of 3000 Ja in 6 seconds. Given cross it's length of 20 cm Hat it's cross-sectional area A is 550m². Determine the thermal conductivity of the material if the temperature difference acroSS the ends is 67°C.

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

oii- A conductor transfers heat of 30 J t
OECC oss it's length of
Hiat it's
20 C17
in 6 seconds- Given
cross- sectional airea A is 55om?.
Determine the thermal condluctivity of the
material if the temperature difference across
the ends is
67°C -
ii An object of emisivitiy 0'7 and co5oss-
sectional
of SSmm?
at room tenmpeiature
area
of 30 losses energy
What is the initial temperat ure of the object?
I0=5.6703x 108 W/m/ +]
at
Tate
of 38.65/8.

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