MCQ
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$

Assertion $A:$ Diffusion current in a $p-n$ junction is greater than the drift current in magnitude if the junction is forward biased.

Reason $R:$ Diffusion current in a $p-n$ junction is from the $n$-side to the $p$-side if the junction is forward biased.

In the light of the above statements, choose the most appropriate answer from the options given below

  • A
    Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$
  • B
    Both $A$ and $R$ are correct but $R$ is NOT the correct explanation of $A$
  • $A$ is correct but $R$ is not correct
  • D
    $A$ is not correct but $R$ is correct

Answer

Correct option: C.
$A$ is correct but $R$ is not correct
c
In forward biased condition, diffusion of majority charge carriers takes place from $p$-side to $n$-side which constitute the diffusion current.

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