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CBSE Class 11-science Answered

what is the concept of thermal conductivity and heat current through a compound bar?
Asked by Subiya Khan | 08 Dec, 2013, 09:07: PM
answered-by-expert Expert Answer
Thermal conductivity is basically the property of a material that allows the flow of heat through the material.
 
Where, A = area of cross section
     T1 - T2 = temperature difference between two faces
             t = time for which the heat flows
             d = distance between the hot and cold faces
 
As per the above equation heat flowing through a substance  from hot face to cold face ,depends on the factor A , T1 - T2, t and d.
 
The praportionality constant K is called the coefficient of thermal conductivity. Its value depends on the nature of the material .
 
Kindly ask seperate question as seperate querie.
Answered by Komal Parmar | 09 Dec, 2013, 06:40: PM

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