Consider the two statements given below. (A) The free-electron density varies among different metals. (B) The free-electron density in a metal is dependent on temperature. The Seebeck effect occurs

Step-by-step solution

The Seebeck effect is the phenomenon of generation of an electromotive force (EMF) in a circuit containing two dissimilar metals whose junctions are maintained at different temperatures. The free-electron density varies from metal to metal. When two different metals are joined, electrons diffuse from the metal with higher free-electron density to the one with lower free-electron density, creating a contact potential difference at the junction. Furthermore, the free-electron density and the kinetic energy of free el