Semiconductors -Multiple Choice Questions Quiz

Interactive MCQs on “Semiconductors”:

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 are semiconductors?

(a) Materials that allow electric current to flow with very low resistance
(b) Materials that completely block the flow of electric current
(c) Materials that conduct electricity better than metals
(d) Materials that have intermediate electrical conductivity between conductors and insulators

Question 2: Which of the following elements is commonly used as a semiconductor material in electronic devices?

(a) Gold
(b) Copper
(c) Silicon
(d) Aluminum

Question 3: What is the basic building block of a semiconductor device?

(a) Transistor
(b) Capacitor
(c) Inductor
(d) Resistor

Question 4: In a semiconductor, what happens to its electrical conductivity with an increase in temperature?

(a) It decreases
(b) It remains constant
(c) It increases
(d) It becomes infinite

Question 5: Which of the following statements is true regarding the band gap of a semiconductor?

(a) It is the energy required to remove an electron from the valence band to the conduction band.
(b) It is the energy difference between the top of the valence band and the bottom of the conduction band.
(c) It is the energy level at which all electrons reside in a semiconductor.
(d) It is the energy required to create a hole in the valence band.

Question 6: What happens to the electrical conductivity of a semiconductor when it is doped with impurities?

(a) It decreases
(b) It remains the same
(c) It increases
(d) It becomes an insulator

Question 7: Which type of semiconductor doping introduces electrons into the crystal lattice?

(a) N-type doping
(b) P-type doping
(c) Intrinsic doping
(d) Extrinsic doping

Question 8: What is a 'hole' in a semiconductor?

(a) An empty space left by a removed electron
(b) An impurity introduced during doping
(c) A region of low electrical conductivity
(d) A type of defect in the crystal lattice

Question 9: Which semiconductor property allows it to act as a switch in electronic circuits?

(a) Density
(b) Conductivity
(c) Doping
(d) Band gap

Question 10: In a P-N junction diode, which region allows for majority carrier flow and low resistance?

(a) P-region
(b) N-region
(c) Depletion region
(d) Band gap region