Fermi Energy And Fermi Level -Multiple Choice Questions Quiz

Interactive MCQs on “Fermi Energy And Fermi Level”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is Fermi energy?

(a) The energy required to move an electron from the valence band to the conduction band
(b) The energy difference between the highest energy level in an atom and the energy of a free electron
(c) The energy at absolute zero temperature where all electron states below it are filled and all states above it are empty
(d) The energy of an electron in its ground state

Question 2: What is the Fermi level?

(a) The energy of an electron in its ground state
(b) The energy level of a free electron in vacuum
(c) The average energy of electrons in a solid
(d) The energy level at which the probability of finding an electron is 50%

Question 3: At absolute zero temperature, the Fermi level is:

(a) At the highest energy level in the conduction band
(b) At the lowest energy level in the valence band
(c) Halfway between the valence and conduction bands
(d) At the same energy level as the highest energy level in the conduction band

Question 4: What is the relationship between Fermi energy and the Fermi level in an intrinsic semiconductor at absolute zero temperature?

(a) Fermi energy is equal to the Fermi level.
(b) Fermi energy is higher than the Fermi level.
(c) Fermi energy is lower than the Fermi level.
(d) Fermi energy and Fermi level are unrelated in an intrinsic semiconductor.

Question 5: In a semiconductor at room temperature (non-zero temperature), the Fermi level is typically:

(a) Located at the middle of the bandgap
(b) Shifted closer to the conduction band
(c) Shifted closer to the valence band
(d) Unchanged compared to absolute zero temperature

Question 6: Which type of semiconductor has its Fermi level aligned with the middle of the bandgap?

(a) Intrinsic semiconductor
(b) N-type semiconductor
(c) P-type semiconductor
(d) Doped semiconductor

Question 7: What happens to the Fermi level of a semiconductor when it is doped with donor atoms?

(a) The Fermi level moves closer to the conduction band.
(b) The Fermi level moves closer to the valence band.
(c) The Fermi level remains unchanged.
(d) The Fermi level moves to the middle of the bandgap.

Question 8: What type of semiconductor has a higher Fermi level compared to an intrinsic semiconductor at the same temperature?

(a) N-type semiconductor
(b) P-type semiconductor
(c) Intrinsic semiconductor
(d) They all have the same Fermi level at the same temperature.

Question 9: The Fermi level of a semiconductor can be controlled by:

(a) Changing the temperature of the material
(b) Applying an external electric field
(c) Doping the semiconductor with impurity atoms
(d) All of the above

Question 10: In an extrinsic semiconductor, the Fermi level is closer to the conduction band in:

(a) N-type semiconductor
(b) P-type semiconductor
(c) They are the same in both N-type and P-type semiconductors.
(d) The Fermi level does not change in extrinsic semiconductors.