Find the typical speed of a conduction electron in lithium, taking its kinetic energy as equal to the Fermi energy, 4.72 eV.
Suppose the lithium is a current carrying wire. How does the speed found in part (a) compare with a typical drift speed of electrons in the wire of 0.1 mm/s? (How many orders of magnitude is the speed of part (a) greater than a typical drift speed of a conducting wire?)
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