In forward biasing of the $p-n$ junction:

  • A
    the positive terminal of the battery is connected to $p-$side and the depletion region becomes thick.
  • B
    the positive terminal of the battery is connected to $n-$side and the depletion region becomes thick.
  • C
    the positive terminal of the battery is connected to $n-$side and the depletion region becomes thin.
  • D
    the positive terminal of the battery is connected to $p-$side and the depletion region becomes thin.

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