When a 
-
junction diode is reverse biased, then
a)
No current flows
b)
The depletion region is increased
c)
The depletion region is reduced
d)
The height of the potential barrier is reduced
When a - junction diode is reverse biased, then
a)
No current flows
b)
The depletion region is increased
c)
The depletion region is reduced
d)
The height of the potential barrier is reduced
Question ID - 150849 | SaraNextGen Top Answer
When a - junction diode is reverse biased, then
a)
No current flows
b)
The depletion region is increased
c)
The depletion region is reduced
d)
The height of the potential barrier is reduced
|
When a |
|
|
a) |
No current flows |
|
b) |
The depletion region is increased |
|
c) |
The depletion region is reduced |
|
d) |
The height of the potential barrier is reduced |
(b)
In reverse biasing, the applied voltage 
on the
-side is positive and is negative on the 
-side. The applied bias 
and the barrier potential 
are in the same direction making the effective junction potential 
. As a result, the junction width will increase. The higher junction potential would restrict the flow of majority carriers to a much greater extent. However, such a field will favour the flow of minority carriers. So, reverse bias current will be due to the minority carriers only.
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