Conductors, Insulators, and Semiconductors in Materials
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What must happen for conduction to take place in a material?

  • The valence and conduction bands must overlap
  • Electrons must move from the conduction band to the valence band
  • Electrons must be given sufficient energy to jump from the valence band to the conduction band (correct)
  • The material must have a large energy gap

    • What defines electrical conductors in terms of energy bands?

  • They have few free electrons in their valence shell
  • They have overlapping valence and conduction bands (correct)
  • They have a large energy gap
  • They are closely grouped together in a tight crystalline pattern

    • Why are semiconductors neither good conductors nor good insulators?

  • They have a large energy gap
  • They have very few free electrons in their valence shell (correct)
  • Their valence and conduction bands overlap
  • Their atoms are closely grouped together in a tight crystalline pattern

    • What type of signal is denoted by a sine wave?

    <p>Analogue signal</p> Signup and view all the answers

    Which type of signal transmission is best suited for computing and digital electronics?

    <p>Digital signal</p> Signup and view all the answers

    What is the main advantage of digital signal processing over analogue signal processing?

    <p>Flexibility in implementation</p> Signup and view all the answers

    What does the width of the forbidden energy gap indicate?

    <p>The bondage of valence electrons to the atom</p> Signup and view all the answers

    Which group of materials offers a very low level of conductivity under pressure from an applied voltage source?

    <p>Insulators</p> Signup and view all the answers

    What type of materials usually have both metal and non-metal properties and are usually semiconductors?

    <p>Materials with exactly 4 valence electrons</p> Signup and view all the answers

    Which material will support a generous flow of charge when a voltage source of limited magnitude is applied across its terminals?

    <p>Conductor</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser