Q. 55.0( 1 Vote )

Consider the following two statements.

(A) Free-electron density is different in different metals.

(B) Free-electron density in a metal depends on temperature.

See beck 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.

Answer :

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The Seebeck effect is a phenomenon, in which a temperature difference between two dissimilar electrical conductors or semiconductors produces a voltage difference between the two substances.


The cause of this voltage difference is the diffusion or migration of free electrons from a higher electron-density region to a lower electron-density region.


The free electron-density of the electrons varies from metal to metal and also electron-density changes with change in temperature.


Hence, both the statements are the causes of Seebeck Effect.

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