Electric Charges and Fields Quiz
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Questions and Answers

What are free electrons?

  • Electrons that can move relatively freely through the material (correct)
  • Electrons that are found in insulators
  • Electrons that are bound to atoms
  • Electrons that have a positive charge

Which of the following is a good conductor of electricity?

  • Wood
  • Aluminum (correct)
  • Glass
  • Rubber

What happens when a good conductor is charged in a small region?

  • The charge remains concentrated in the small region
  • The charge readily distributes itself over the entire surface of the material (correct)
  • The charge is unable to move to other regions of the material
  • The charge causes the material to become an insulator

What are the electrical properties of semiconductors?

<p>Similar to insulators (B)</p> Signup and view all the answers

What are electrical insulators?

<p>Materials in which all electrons are bound to atoms (B)</p> Signup and view all the answers

Electrical conductors are materials in which all of the electrons are bound to atoms.

<p>False (B)</p> Signup and view all the answers

Good conductors readily distribute charge over the entire surface of the material when charged in a small region.

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

Good insulators allow the charge to move to other regions of the material when charged in a small region.

<p>False (B)</p> Signup and view all the answers

Semiconductors have electrical properties that are similar to insulators.

<p>False (B)</p> Signup and view all the answers

Copper, aluminum, and silver are examples of good insulators.

<p>False (B)</p> Signup and view all the answers

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