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?

<p>Silicon, germanium, gallium arsenide (C)</p> Signup and view all the answers

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

<p>Semiconductor junction (A)</p> Signup and view all the answers

What type of conductivity does a semiconductor exhibit?

<p>Variable conductivity based on temperature (C)</p> Signup and view all the answers

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

<p>By introducing impurities into the crystal structure (B)</p> Signup and view all the answers

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

<p>Semiconductor junction (D)</p> Signup and view all the answers

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

<p>Gallium arsenide (C)</p> Signup and view all the answers

What kind of devices can be made from semiconductors?

<p>Devices for amplification, switching, and energy conversion (B)</p> Signup and view all the answers

In game theory, what is a Nash equilibrium?

<p>A situation where each player has nothing to gain by changing their own strategy (B)</p> Signup and view all the answers

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

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

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

<p>Yes, every finite game has a Nash equilibrium (D)</p> 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?

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

What is the principle of Nash equilibrium based on?

<p>The assumption that players have perfect information about each other's strategies (A)</p> Signup and view all the answers

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