Question

Formula of equivalent thermal conductivity

Answer 1

Thermal conductivity (λ or k) is the capacity of the body to conduct or spread heat.

K=QL/AΔT

Where,

thermal conductivity is k in W/m K,

the amount of heat transfer through the material is Q in J/S or W,

the area of the body is A in m2,

the difference in temperature is ΔT in K.

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Answer 2

Answer:

The equivalent thermal conductivity is different for series and parallel connections.

Explanation:

The thermal conductivity of a material is defined as a measure of its ability to conduct heat.

Consider  K1 and K2 are thermal conductivity of two resistors.

Formula of equivalent thermal conductivity when resistors are connected in series is as following:

                                      $K= \frac{2K1K2}{K1+K2}$

Formula of equivalent thermal conductivity when resistors are connected in parallel is as following:

                                    $K = \frac{K1 + K2}{2}$

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