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Question

What is the unit of the coefficient of thermal conductivity K?


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Solution

Determine the unit of the coefficient of thermal conductivity K.

  1. A rate of heat transport per unit area per unit temperature difference across a solid is equivalent to the material's thermal conductivity coefficient.
  2. A coefficient of thermal conductivity of a substance is defined as the total amount of heat that passes in one second across the opposing sides of a unit cube whose faces are kept so at a temperature difference of 1°C.
    Hence, the unit of the coefficient of heat conductivity K is "Wm1k1".

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