Question
If $K$ and $\sigma$ respectively are the thermal and electrical conductivities of a metal at absolute temperature $T$ then :(a) $\frac{K}{\sigma T}=$ constant(b) $\frac{K}{\sigma}=$ constant(c) $\frac{K}{T}=$ constant(d) $\frac{\sigma}{K T}=$ constant
Step 1
Mathematically, this can be written as: \[ \frac{K}{\sigma} = L \cdot T \] where L is the Lorenz number, a constant. Show more…
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If $K$ and $\sigma$ respectively are the thermal and electrical conductivities of a metal at absolute temperature $T$, then (a) $\frac{K}{\sigma T}=$ constant (b) $\frac{K}{\sigma}=$ constant (c) $\frac{K}{T}=$ constant (d) $\frac{\sigma}{K T}=$ constant
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