Multiple choice general knowledge science & technology

Which of the following statements is incorrect?

  1. Conduction within pure semiconductors is termed intrinsic conductio

  2. The dominant charge carriers within a doped semiconductor are called majority charge carriers

  3. Doping pure semiconductor material with small amounts of donar impurities produces an n-type semiconductor

  4. At room temperatures, pure semiconductors make excellent conductors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pure semiconductors have very few free charge carriers at room temperature, making them poor conductors. Their conductivity increases with temperature (unlike metals) and with doping. The incorrect statement is D because pure semiconductors are actually insulators or very poor conductors at room temperature - they need doping to become useful conductors.

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