In Fourier's law, the proportionality constant is called the______________________?
Correct answer: C. Thermal conductivity
- A. Heat transfer co-efficient
- B. Thermal diffusivity
- C. Thermal conductivity
- D. Stefan-Boltzmann constant
Explanation
Fourier’s law is q = −kA(dT/dx), where k is the thermal conductivity. Thermal diffusivity instead measures the rate at which temperature changes spread through a material.
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