Which of the following statements concerning the depletion zone of an unbiased $P N$ junction is (are) true
  • A
    The width of the zone is independent of the densities of the dopants (impurities)
  • B
    The width of the zone is dependent on the densities of the dopants
  • C
    The electric field in the zone is produced by the ionized dopant atoms
  • D
    A and B both 
[IIT-JEE 1995]
art

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