Fundamentals of Electricity and Materials in Electronics

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Questions and Answers

What is the outer shell of an atom called?

  • Particle shell
  • Conduction shell
  • Valence shell (correct)
  • Electron shell

Which material does not conduct electrical current under normal conditions?

  • Copper
  • Rubber (correct)
  • Gold
  • Silver

What is a semiconductor's ability to conduct electrical current?

  • Equivalent to insulators
  • Equivalent to conductors
  • Between conductors and insulators (correct)
  • Similar to insulators

What characterizes conductive materials?

<p>Atoms with only one valence electron very loosely bound to the atom (C)</p> Signup and view all the answers

Which material has very high resistivities and few free electrons?

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

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Study Notes

Atomic Structure

  • The outer shell of an atom is called the valence shell.

Electrical Conduction

  • Insulators are materials that do not conduct electrical current under normal conditions.
  • Semiconductors have the ability to conduct electrical current partially, but not fully.
  • Conductive materials are characterized by their ability to conduct electrical current freely.
  • Materials with very high resistivities and few free electrons are classified as insulators.

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