Coulomb's Law and Point Charges Quiz
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Questions and Answers

What did Coulomb vary in his experiments to establish the force between charges?

  • The distance between fixed charges
  • Both the distance and magnitude of charges (correct)
  • The magnitude of fixed charges
  • Neither the distance nor magnitude of charges

    • What did Coulomb's experiments initially establish?

  • The magnitude of the unit charge
  • The mathematical relation for the force between charges (correct)
  • The value of the constant k
  • The subatomic nature of charges

    • At what scale has Coulomb's law been established?

  • Both macroscopic and subatomic scales (correct)
  • Only at the subatomic scale
  • Only at the macroscopic scale
  • Neither macroscopic nor subatomic scales

    • What does Coulomb's law provide a definition for?

    <p>The unit of charge</p> Signup and view all the answers

    What determines the size of the unit of charge in Coulomb's law?

    <p>The value of the constant k</p> Signup and view all the answers

    What is the SI unit of charge called, based on the value of k chosen?

    <p>Coulomb</p> Signup and view all the answers

    What is the main focus of the given text?

    <p>Explaining the concept of Coulomb's law</p> Signup and view all the answers

    Under what condition can charged bodies be treated as point charges?

    <p>When the linear size of the charged bodies is much smaller than the distance separating them</p> Signup and view all the answers

    What was Coulomb's approach to discover the relationship between force and charges?

    <p>He transferred charges from one sphere to another to observe the force variations</p> Signup and view all the answers

    What happens when an uncharged metallic sphere is brought into contact with a charged metallic sphere?

    <p>The charge is distributed equally between the two spheres</p> Signup and view all the answers

    According to Coulomb's law, what is the relationship between the force (F) and the distance (r) between two point charges?

    <p>$F \propto \frac{1}{r^2}$</p> Signup and view all the answers

    What does the constant k in Coulomb's law equation ($F = \frac{k q_1 q_2}{r^2}$) represent?

    <p>The proportionality constant</p> Signup and view all the answers

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