Question

What do you understand by the term thermal conductivity?

Answer 1

1. Thermal conductivity: the ability of a given material to conduct heat through it.
2. Every substance has its own capacity to conduct heat.
3. Mathematically, $K=\frac{QL}{A∆T}$

Where,

K is the thermal conductivity in W/m.K.

Q is the amount of heat transferred through the material in Joules/second or Watts.

L is the distance between the two isothermal planes.

A is the area of the surface in square meters.

ΔT is the difference in temperature in kelvin at both ends.