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


7.
In the characteristic curve of a p-n junction diode, the knee voltage represents:
A.
Maximum reverse voltage
B.
Minimum voltage required for conduction in forward bias
C.
Breakdown voltage
D.
The point where reverse current stops
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ANSWER :
B. Minimum voltage required for conduction in forward bias
8.
The reverse bias current in a diode is:
A.
Very high
B.
Zero
C.
Very small
D.
Infinite
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ANSWER :
C. Very small
9.
The forward bias current in a diode increases:
A.
Linearly with voltage
B.
Exponentially with voltage
C.
Remains constant
D.
Decreases with voltage
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ANSWER :
B. Exponentially with voltage
10.
In the reverse bias region, as reverse voltage increases, the reverse current:
A.
Increases sharply
B.
Remains constant
C.
Decreases
D.
Becomes zero
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ANSWER :
B. Remains constant
11.
The breakdown in a p-n junction diode can be of two types:
A.
Ohmic and Zener
B.
Avalanche and Zener
C.
Thermal and Electrical
D.
Conduction and Resistance
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ANSWER :
B. Avalanche and Zener
12.
In the characteristic curve of a P-N junction diode, the reverse bias region shows:

NEET - 2016

A.
A large current flow
B.
Zero current flow
C.
A small current flow
D.
An increase in voltage
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ANSWER :
C. A small current flow