Coulomb's Law Quiz
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Questions and Answers

What does Equation (1.3) in the text represent?

  • The gravitational force between two stationary point masses
  • The magnetic force between moving charges
  • The electrostatic force between two point charges (correct)
  • The electric field between two point charges

What is the relationship between the forces F12 and F21 according to Coulomb's law?

  • F12 = -2F21
  • F12 = -F21 (correct)
  • F12 = 2F21
  • F12 = F21

Which law does Coulomb's law agree with according to the text?

  • Newton's third law (correct)
  • Newton's second law
  • Newton's first law
  • Law of conservation of energy

What kind of dependence on distance do both Coulomb's law and Newton's law exhibit?

<p>Inverse-square dependence (B)</p> Signup and view all the answers

What is the electric force between an electron and a proton at a distance r apart?

<p>$\frac{1}{4 \pi \varepsilon_0} \cdot \frac{e^2}{r^2}$ (D)</p> Signup and view all the answers

What is the corresponding gravitational force between an electron and a proton at a distance r apart?

<p>$-Gm_em_p/r^2$ (B)</p> Signup and view all the answers

What does the negative sign in the electric force equation between an electron and a proton indicate?

<p>The force has an attractive nature (C)</p> Signup and view all the answers

How does Coulomb's law compare with Gauss's law in terms of describing electric fields?

<p>Coulomb's law applies only to point charges, while Gauss's law applies to any charge distribution. (A)</p> Signup and view all the answers

What does the inverse-square dependence on distance signify in both Coulomb's and Newton's laws?

<p>$F$ decreases with the square of the distance from the source of the field. (A)</p> Signup and view all the answers

What are the masses of a proton and an electron as provided in the text?

<p>$9.11 \times 10^{-31}$ kg and $1.67 \times 10^{-27}$ kg respectively (A)</p> Signup and view all the answers

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