P N Junction -Multiple Choice Questions Quiz

Question 1: What is a P-N junction?

(a) A junction between a proton and a neutron
(b) A junction between two parallel conductors
(c) A junction between a P-type semiconductor and an N-type semiconductor
(d) A junction between a positive charge and a negative charge

Question 2: What happens when a P-N junction is forward-biased?

(a) Current flows easily through the junction
(b) Current flows from N-type to P-type region
(c) Current flows from P-type to N-type region
(d) No current flows through the junction

Question 3: What is the process called when a P-N junction allows current flow in only one direction?

(a) Reverse biasing
(b) Forward biasing
(c) Biasing imbalance
(d) Diode effect

Question 4: What happens when a P-N junction is reverse-biased?

(a) Current flows easily through the junction
(b) Current flows from N-type to P-type region
(c) Current flows from P-type to N-type region
(d) No current flows through the junction

Question 5: What is the depletion region in a P-N junction?

(a) The region with the highest concentration of charge carriers
(b) The region where electrons are removed from the N-type semiconductor
(c) The region with an equal number of positive and negative charge carriers
(d) The region near the junction where charge carriers are depleted

Question 6: What is the barrier potential in a forward-biased P-N junction?

(a) The potential difference across the entire P-N junction
(b) The potential difference across the depletion region
(c) The potential difference between the P-type region and the N-type region
(d) The potential difference between the positive and negative terminals of the applied voltage

Question 7: What is the process called when electrons and holes recombine in a P-N junction?

(a) Diffusion
(b) Depletion
(c) Recombination
(d) Conduction

Question 8: Which of the following devices is based on the principle of the P-N junction?

(a) Light-emitting diode (LED)
(b) Electric motor
(c) Transformer
(d) Capacitor

Question 9: Which of the following is NOT a characteristic of a P-N junction diode?

(a) Non-linear current-voltage relationship
(b) Allowing current flow in one direction
(c) Conducting equally well in both directions
(d) Fast response time

Question 10: What is the main application of a P-N junction diode in electronic circuits?

(a) Voltage regulation
(b) Current amplification
(c) Energy storage
(d) Signal modulation

Results:

Total score: /10

Answer key:

Question 1: c

Question 2: c

Question 3: b

Question 4: d

Question 5: d

Question 6: b

Question 7: c

Question 8: a

Question 9: c

Question 10: a

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