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(C) An $N-$ type semiconductor is electrically neutral. During the doping process,pentavalent impurity atoms (like Phosphorus or Arsenic) are added to

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Neutral

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(C) An $N-$ type semiconductor is electrically neutral. During the doping process,pentavalent impurity atoms (like Phosphorus or Arsenic) are added to the intrinsic semiconductor (like Silicon or Germanium). Since the impurity atoms themselves are electrically neutral and the host semiconductor crystal is also neutral,the resulting $N-$ type semiconductor remains electrically neutral overall,despite having an excess of free electrons.

$A$ $N-$ type semiconductor is

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