Question

Show that the SI units of thermal conductivity are W//m-K.

Answer 1

Explanation:

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Answer 2

SI units of thermal conductivity are W/m-K.

Given:

SI units of thermal conductivity.

To find:

Show that the SI units of thermal conductivity are W/m-K.

Explanation:

Thermal Conductivity.

It is the quantity of heat that will passes in unit time through a unit cross sectional area of a substance whose thickness is unity, when its opposite faces differ in temperature by one degree.

From definition,

K = $\frac{Q \ d}{A \ \Delta T} \)$ =$\frac{W \ m}{m^2\ k}$ = $\frac{W }{m\ k}$

Hence we proved that  SI units of thermal conductivity are W/m-K.

To learn more...

1)The ratio of thermal conductivity of two rods is 5:4.The two rods of same area of cross section and same thermal resistance will have the lengths in the ratio​.

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