Modern Engineering Materials Quiz
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Questions and Answers

What happens to the electrons in the valence band of a semiconductor when energy is supplied?

  • They jump to the conduction band (correct)
  • They move to the insulator band
  • They stay in the valence band
  • They disappear

    • What happens to the conductivity of a semiconductor as temperature increases?

  • It remains constant
  • It decreases
  • It becomes zero
  • It increases (correct)

    • What is the characteristic of the forbidden energy band gap in semiconductors?

  • It is non-existent
  • It is constant
  • It is very large
  • It is very small (correct)

    • What is the state of the valence band in semiconductors at 0K?

    <p>Completely filled</p> Signup and view all the answers

    What is the state of the conduction band in semiconductors at 0K?

    <p>Has no electrons</p> Signup and view all the answers

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