Elementary knowledge of diodes and transistors - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 2003

In a semi conductor junction diode, as the depletion or barrier layer is forward-biased, the layer

A. Widens
B. Narrows
C. Remains constant
D. Widens then narrows

Question 3:

• JAMB 2004

In a reverse biased junction diode, current flows in by

A. Positive holes alone
B. Majority carriers
C. Electron alone
D. Minority carriers

Question 4:

• JAMB 2005

In the circuit diagram of a transistor above, the terminal P, Q and R represent

A. EMITTER, BASE and COLLECTOR
B. COLLECTOR, EMITTER and BASE
C. BASE, COLLECTOR and EMITTER
D. BASE, ENITTER and COLLECTOR

Question 5:

• JAMB 2006

A p-n junction diode is used as?

A. A rectifier in a d.c circuit
B. An amplifier in d.c circuit
C. An anplifier in an a.c circuit
D. A rectifier in an a.c circuit