railway RRB JE (CBT I + CBT II) Mock Test 2024 Heat Transfer Conduction Fourier Law and Thermal Conductivity
Where K and σ are thermal and electrical conductivities in a solid, according to Wiedemann-Franz law
1
\(\frac{{KT}}{\sigma } = {\rm{constant}}\)
2
\(\frac{{K\sigma}}{T } = {\rm{constant}}\)
3
\(\frac{{\sigma}}{KT } = {\rm{constant}}\)
4
\(\frac{{K}}{\sigma T } = {\rm{constant}}\)