Introductory Electronics - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 2012

A transistor function mainly as a

A. Switch and amplifier
B. Rectifier and an amplifier
C. Charge storer and an amplifier
D. Charge storer and a switch

Question 27:

• JAMB 2016

Semiconductor is a class of solid whose conductivity increases with an increase in

A. Pressure
B. Temperature
C. Current
D. Voltage

Question 28:

• JAMB 2017

Which of the following is a semiconductor

A. Copper
B. Silicon
C. Plastic
D. Iron

Question 29:

• JAMB 2018

Which of the following diagrams represents correctly an n-p-n transistor?

i.

ii.

iii.




A. I
B. Ii
C. Iii
D. None of the above

Question 30:

• JAMB 2019

In semi-conductor, the carriers of current at room temperature are

A. Electrons only
B. Electrons and holes
C. Holes only
D. Electron and ions