Multiple choice

The addition of pentavalent impurity to a semiconductor creates ______.

  1. holes

  2. free electrons

  3. minority electrons

  4. majority electrons
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pentavalent impurities have five valence electrons. When added to a semiconductor like silicon, four electrons form covalent bonds, leaving one extra electron free to conduct electricity, creating an n-type semiconductor with majority electrons.

Keep practicing — related questions