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


13.
The forward current in a p-n junction diode is primarily due to:
A.
Majority carriers
B.
Minority carriers
C.
Breakdown current
D.
Heat energy
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ANSWER :
A. Majority carriers
14.
In the characteristic curve of a diode, the forward current starts increasing significantly after:
A.
0.1V
B.
0.3V
C.
0.7V
D.
2V
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ANSWER :
C. 0.7V
15.
When a P-N junction diode is forward biased, the current flow increases with:

NEET - 2017

A.
Decrease in voltage
B.
Increase in temperature
C.
Increase in voltage
D.
Decrease in resistance
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ANSWER :
C. Increase in voltage
16.
The region in which a diode does not conduct in forward bias is called:
A.
Saturation region
B.
Breakdown region
C.
Cut-off region
D.
Knee region
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ANSWER :
D. Knee region
17.
In the reverse bias, if the breakdown voltage is exceeded, the diode:
A.
Stops working permanently
B.
Allows a large current to flow
C.
Becomes an open circuit
D.
Becomes a perfect conductor
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ANSWER :
B. Allows a large current to flow
18.
For a P-N junction diode, the characteristic curve shows a sudden increase in current when the voltage exceeds:

NEET - 2018

A.
The cut-off voltage
B.
The threshold voltage
C.
The breakdown voltage
D.
The maximum forward voltage
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ANSWER :
B. The threshold voltage