EE211B Quizizz #4

1. In solids, _________in outer most orbits of atoms determine its electrical properties

• protons

• neutron

• electrons

• positron

2. When an electric field is applied to the metal, the free electrons move in ______ direction

• Opposite

• Same

3. Electron occupying an energy level can be determined by

• probability function F(E)

• probability function Z(E)

• Normalized function F(E)

• Occupation function N(E)

4. If F(E) =1, then

• 0% probability that the electrons to occupy energy level below Fermi level

• 50% probability that the electrons to occupy energy level below Fermi level

• 75% probability that the electrons to occupy energy level below Fermi level

• 100% probability that the electrons to occupy energy level below Fermi level

5. At absolute zero, may an electron be found above Fermi level?

• Yes

• No

6. Above absolute zero, the probability that an electron will be at the Fermi level is

• 0.5

• Less than 1

• 1

7. Above absolute zero, the probability that an electron will be below the Fermi level is

• 0

• 0.5

• Less than 1

• 1

8. Consider two energy levels : E₁ = E eV above the Fermi level and E₂ = E eV below the Fermi level. P₁ and P₂ are the probabilities of E₁ and E₂ being occupied by the electron respectively. Then

• P₁ > P₂

• P₁ = P₂

• P₁ < P₂

• None of the above