Question

The Fermi level for potassium is 2.1eV. The velocity of electrons at fermi level is

Answer 1

Answer:

The Fermi level for potassium is 2.1eV. Calculate the velocity of the electron at the Fermi level. Solution:- We have the formula, = 1 2 2 Therefore, = 2 1 2 = 2 × 2.1 × 1.602 × 10−19 / 9.11 × 10−31 1 2 = 8.6 × 10 5 /.