Consider the following statements.
(A) Free-electron density is different in different metals.
(B) Free-electron density in a metal depends on temperature.
Seebeck Effect is caused
(a) due to both A and B
(b) due to A but not due to B
(c) due to B but not due to A
(d) neither due to A nor due to B
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Explanation:
Seebeck Effect is caused
(a) due to both A and B
(b) due to A but not due to B
(c) due to B but not due to A
(d) neither due to A nor due to B✔️✔️
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(a) Due to both A and B. Free-electron density depends on the temperature in metal, and it varies in various metals.
Explanation:
- As per the Seebeck effect, the two dissimilar electrical conductors have different temperatures.
- When a different temperature is produced, across the junctions, a potential difference is produced.
- The potential difference’s cause is the free electrons diffusion to a low electron-density region from a high electron-density region.
- The electrons’ free density changes with the temperature change, and the free density is different in different metals. So, it is proved that the Seebeck effect is caused by both the statements.
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