What is meant by thermal conductiity for 1th in physcis?
Answers
Thermal conductivitiy of the material of the body is defined as quantity of heat flowing per sec normally through unit area of the material thickness when temp. difference between faces is unity.
Answer:
Explanation:
Thermal conductivity is defined as the transportation of energy due to the random movement of molecules across the temperature gradient. In simple words, it is defined as the measure of a material’s ability to conduct heat. It is denoted by k.
The inverse of thermal conductivity is thermal resistivity. It is defined as the temperature difference by which a material can resist the heat flow. The mathematical form of thermal resistivity is as follows:
Thermal conductivity formula
k=QLA/ΔT
Where,
k is the thermal conductivity (Wm-1K-1)
Q is the amount of heat transferred through the material (Js-1)
A is the area of the body (m2)
ΔT is the temperature difference (K)