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)
V Vakul

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 

\rightarrow \infty 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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