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Semiconductor Basics

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Questions and Answers

How does the resistivity of a semiconductor generally change with temperature?

Rises as temperature falls

Remains constant with temperature changes

Rises as temperature rises

Falls as temperature rises (correct)

What is a semiconductor?

A material with high electrical conductivity like copper

A material with low electrical conductivity like glass

A material with electrical conductivity between that of a conductor and an insulator (correct)

A material with no electrical conductivity

What can alter the conducting properties of a semiconductor in useful ways?

Exposing it to high pressure

Applying a magnetic field

Introducing impurities into the crystal structure (doping) (correct)

Heating it to a very high temperature

What are some examples of semiconductors mentioned in the text?

Silicon, germanium, gallium arsenide Signup and view all the answers

What is created when two differently doped regions exist in the same crystal?

Semiconductor junction Signup and view all the answers

What type of conductivity does a semiconductor exhibit?

Variable conductivity based on temperature Signup and view all the answers

How are the conducting properties of a semiconductor altered in useful ways?

By introducing impurities into the crystal structure Signup and view all the answers

What type of junction is created when two differently doped regions exist in the same crystal?

Semiconductor junction Signup and view all the answers

Which material is mentioned as the second-most common semiconductor after silicon?

Gallium arsenide Signup and view all the answers

What kind of devices can be made from semiconductors?

Devices for amplification, switching, and energy conversion Signup and view all the answers

In game theory, what is a Nash equilibrium?

A situation where each player has nothing to gain by changing their own strategy Signup and view all the answers

If two players Alice and Bob choose strategies (A, B), what constitutes a Nash equilibrium?

Alice has no other strategy available that does better than A at maximizing her payoff in response to Bob choosing B, and vice versa Signup and view all the answers

According to Nash's result, is there a Nash equilibrium for every finite game?

Yes, every finite game has a Nash equilibrium Signup and view all the answers

When does (A, B, C, D) constitute a Nash equilibrium in a game involving players Alice, Bob, Carol, and Dan?

A is Alice's best response to (B, C, D), B is Bob's best response to (A, C, D), and so forth Signup and view all the answers

What is the principle of Nash equilibrium based on?

The assumption that players have perfect information about each other's strategies Signup and view all the answers