WorksheetsDiode Tester
Total questions: 10
Worksheet time: 5mins
What is the primary purpose of a pn junction diode?
To amplify signals
To act as a switch
To allow current to flow in one direction
To store electrical charge
What occurs at the junction of a pn diode?
Electron-hole pairs are created
Electrons move from the n-type to the p-type material
Holes move from the p-type to the n-type material
A depletion region is formed
Which of the following is true when a pn junction diode is forward biased?
The depletion region widens
The diode blocks current flow
The diode allows current to flow
The voltage across the diode increases
What is the typical forward voltage drop of a silicon pn junction diode?
0.3 V
0.7 V
1.2 V
1.5 V
What happens to the depletion region when a pn junction diode is reverse biased?
It becomes conductive
It disappears
It narrows
It widens
Which of the following is NOT a typical application of a pn junction diode?
Rectification
Voltage regulation
Signal modulation
Radio transmission
What is the main difference between a zener diode and a regular pn junction diode?
Zener diodes can conduct in reverse bias
Zener diodes have a higher forward voltage drop
Zener diodes are used for rectification
Zener diodes do not have a depletion region
In a pn junction, what are the majority carriers in the n-type material?
Holes
Electrons
Positive ions
Which of the following best describes the behaviour of a pn junction diode in reverse bias?
It conducts a large current
It conducts a small leakage current
It conducts no current
It amplifies the input signal
What is the effect of temperature on the forward voltage drop of a pn junction diode?
It increases with temperature
It decreases with temperature
It remains constant
It fluctuates randomly
