The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?
Correct answer: A. T
- A. T
- B. 1/T
- C. T2
- D. 1/T2
Explanation
The Wiedemann-Franz law states that the ratio of thermal conductivity to electrical conductivity is proportional to absolute temperature, with the Lorenz number approximately constant. Therefore, the ratio varies as T.
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