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Explain with the help of a diagram, how ...

Explain with the help of a diagram, how depletion region and potential barrier are formed in a junction diode.
If a small voltage is applied to a p-n junction diode how will the barrier potential be affected when it is (i) forward biased and (ii) reverse biased?

Answer

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How is a potential barrier formed in p-n junction diode ?

Explain with the help of a diagram the formation of depletion layer and potential barrier in a p-n junction.

Knowledge Check

  • Potential barrier developed in a junction diode opposes

    A
    minority carriers in both regions.
    B
    majority carriers.
    C
    electrons in n-region.
    D
    holes in p-region.

  • In a p-n junction diode, the barrier potential opposes diffusion of

    A
    free electrons from `n`- region
    B
    holes from `p`- region
    C
    majority charge carriers from both the regions
    D
    minority charge carriers from both the regions

  • The reverse biasing in a p-n junction diode

    A
    decreases the potential barrier.
    B
    increases the potential barrier.
    C
    increases the number of minority charge carriers.
    D
    increases the number of majority charge carriers.

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