Question

The Wiedemann-Franz law is

• A. $k_0 = L$
• B. $k_0 T = L$
• C. $K L = k_0$
• D. $\sigma / K = L$

Hint:

Wiedemann-Franz law states k σT = L, where L is the Lorenz number, linking thermal and electrical conductivities.

Answer 1

The Correct Option is B

The Wiedemann-Franz law relates the thermal conductivity $k$ to the electrical conductivity $\sigma$ as:
\[ \frac{k}{\sigma T} = L \]
where $L$ is the Lorenz number