The Free-Electron Model of Metals Gives a Good Account of Electrical

Multiple Choice

The free-electron model of metals gives a good account of electrical conduction if

A) the classical mean speed v_av is replaced by the Fermi speed u_F.
B) the collisions between electrons and the lattice ions are interpreted in terms of the scattering of electron waves.
C) the collisions between electrons and the lattice ions are interpreted in terms of the scattering of hard spheres.
D) the classical mean speed v_av is retained in the model and the collisions between electrons and the lattice ions are interpreted in terms of the scattering of electron waves.
E) the classical mean speed v_av is replaced by the Fermi speed u_F and the collisions between electrons and the lattice ions are interpreted in terms of the scattering of electron waves.