Answer to Question #335184 in Solid State Physics for Johannes Steven

Question #335184

What is Lorentz number? The thermal and electrical conductivities of Cu at 20oC are 390 Wm-1K-1 and

5.87x107W-1m-1 respectively. Calculate Lorentz number.​​


1
Expert's answer
2022-05-02T13:44:15-0400

The Lorentz number is given by

"L=\\frac{\\kappa}{\\sigma T}""L=\\rm\\frac{290\\: Wm^{-1}K^{-1}}{5.87\\times 10^{7}\\: \\Omega ^{-1}m^{-1}\\times 293\\: K}=1.69\\times 10^{-8}\\: W\\Omega K^{-2}"


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