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Question

(B) The correct answer is $B$ $(N-type)$.When a pentavalent impurity (donor impurity) is added to an intrinsic semiconductor like Silicon or Germanium

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$N-type$

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(B) The correct answer is $B$ $(N-type)$.When a pentavalent impurity (donor impurity) is added to an intrinsic semiconductor like Silicon or Germanium,it provides extra free electrons to the crystal lattice.These electrons act as majority charge carriers.Since the charge carriers are negatively charged electrons,the resulting semiconductor is known as an $N-type$ semiconductor.

$A$ semiconductor doped with a donor impurity is

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