18 Questions
What is the maximum number of electrons in the first shell of an atom?
2
What is an example of acceptor impurities in semiconductors?
Pentavalent impurities
Which component is also known as the electron collector in a vacuum tube?
Anode
At absolute zero temperature, how does a semiconductor behave?
An insulator
What happens to the internal resistance of a silicon diode as the forward current increases?
Decreases
What is the process of adding impurities to a semiconductor material called?
Doping
What happens to the conductivity of a semiconductor when the temperature increases?
Increases
In which condition does a diode conduct current?
Forward-biased
What is the purpose of adding a pentavalent impurity to silicon?
Increase the number of free electrons
Which of the following is not a type of vacuum tube?
Transistor
What type of chemical bond is significant in metals?
Metallic bonding
In a semiconductor crystal, what holds the atoms together?
Covalent bonds
What is recombination in the context of semiconductors?
A valence electron becomes a conduction electron
In the complete diode model, what is taken into account?
All of these
What is the function of a suppressor grid in a vacuum tube?
Control the flow of electrons
What determines the barrier potential of a pn junction?
All of these
What are elements classified as if they have four valence electrons?
Compound semiconductor
How is a positive ion formed?
An atom gains an extra valence electron
Test your knowledge on atomic structure and impurities with this quiz. Questions cover topics such as types of atoms, maximum number of electrons in shells, acceptor impurities, and electron collectors.
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