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  • 2004|Electronics and Comm (GATE Exam)-Previous Question Paper Solution
  • The impurity commonly used for realising the base region ...
Multiple choice

The impurity commonly used for realising the base region of a silicon n – p – n transistor is

  1. gallium

  2. indium

  3. boron

  4. phosphorus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Trivalent impurities are used for making p-type semiconductor. Boron is trivalent.

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