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- Home
- Engineering
- Can someone explain When a PN junction diode is reverse biased
When a PN junction diode is reverse biased
- Option 1)
Electrons and holes are attracted towards each other and move towards the depletion region
- Option 2)
Electrons and holes move away from the junction depletion region
- Option 3)
Height of the potential barrier decreases
- Option 4)
No change in the current takes place
Answers (1)
Using
P-N junction -
When p type semiconductor is mixed with N - type semiconductor, P-N junction formed
- wherein
There is very thin region (of the order of micro meter) called depution region.
and
P -N junction as diode -
It is a one way device. It offers a low resistance when forward biased and high resistance when reverse biased.
- wherein
R = 0, Forward
R Reverse
When PN junction is reverse biased, height of barrier increases and electron and holes move away from the junction depletion region.
Option 1)
Electrons and holes are attracted towards each other and move towards the depletion region
This option is incorrect
Option 2)
Electrons and holes move away from the junction depletion region
This option is correct
Option 3)
Height of the potential barrier decreases
This option is incorrect
Option 4)
No change in the current takes place
This option is incorrect
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