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

question 49

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.

---

Definitions:

TR

Total Revenue; the total receipts from sales of goods or services provided by a company before any deductions are made.

TVC

Total Variable Cost; the total of all costs that vary with the level of output produced by a company.

Economic Loss

A monetary reduction in income, net worth, or value of assets beyond normal expectations, often as a result of business activities or economic policies.

Price

The amount of money required to purchase a good or service, determined by factors such as supply and demand.