Characteristic Curves of a P-N Junction Diode in Forward and Reverse Bias NEET Questions

Physics - Experimental Skills

Characteristic Curves of a P-N Junction Diode in Forward and Reverse Bias MCQ Questions


1.
In forward bias, a p-n junction diode allows:
A.
Majority carriers to flow
B.
Minority carriers to flow
C.
No current to flow
D.
Only reverse current to flow
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ANSWER :
A. Majority carriers to flow
2.
In reverse bias, the current in a p-n junction diode is due to:
A.
Majority carriers
B.
Minority carriers
C.
No carriers
D.
Both majority and minority carriers
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ANSWER :
B. Minority carriers
3.
The forward voltage drop of a silicon diode is approximately:
A.
0.1V
B.
0.3V
C.
0.7V
D.
1.5V
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ANSWER :
C. 0.7V
4.
In reverse bias, when the voltage increases beyond a certain limit, the diode undergoes:
A.
Breakdown
B.
Saturation
C.
Forward conduction
D.
No change
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ANSWER :
A. Breakdown
5.
The reverse saturation current in a p-n junction diode is mainly due to:
A.
Electron-hole recombination
B.
Majority carriers
C.
Minority carriers
D.
Doping level
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ANSWER :
C. Minority carriers
6.
Which of the following is true about the characteristic curve of a P-N junction diode in forward bias?

NEET - 2015

A.
The current increases exponentially with voltage
B.
The current decreases with increasing voltage
C.
The current remains constant with increasing voltage
D.
The current decreases exponentially with voltage
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ANSWER :
A. The current increases exponentially with voltage