10 Questions
What must happen for conduction to take place in a material?
Electrons must be given sufficient energy to jump from the valence band to the conduction band
What defines electrical conductors in terms of energy bands?
They have overlapping valence and conduction bands
Why are semiconductors neither good conductors nor good insulators?
They have very few free electrons in their valence shell
What type of signal is denoted by a sine wave?
Analogue signal
Which type of signal transmission is best suited for computing and digital electronics?
Digital signal
What is the main advantage of digital signal processing over analogue signal processing?
Flexibility in implementation
What does the width of the forbidden energy gap indicate?
The bondage of valence electrons to the atom
Which group of materials offers a very low level of conductivity under pressure from an applied voltage source?
Insulators
What type of materials usually have both metal and non-metal properties and are usually semiconductors?
Materials with exactly 4 valence electrons
Which material will support a generous flow of charge when a voltage source of limited magnitude is applied across its terminals?
Conductor
Explore the properties of conductors, insulators, and semiconductors such as carbon, silicon, and germanium. Understand the role of valence band and conduction band in enabling conduction, and how temperature affects electron behavior in these materials.
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