Write about the thermal resistance and its SI unit.
Answer (1)
30th Dec, 2021
The thermal resistance is the ratio of length of the rod of the material and the product of the coefficient of thermal conductivity and the area of cross-section of the rod.
R = l/KA
Where, l= length of rod
K = thermal conductivity
A = area of cross-section.
If the resistance increases thermal conductivity decreases and vice versa.
The SI unit of thermal resistance is second°C/kilo-calorie.
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