Electrostatic Field Concepts

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Questions and Answers

What is the fundamental characteristic of an electric charge?

  • Its weight
  • Its volume
  • Its ability to exert a force (correct)
  • Its color

When a charged object retains its charge temporarily without immediate transfer of electrons, what is this condition called?

  • Resting charge (correct)
  • Charged motion
  • Dynamic charge
  • Electricity in flux

What is the term for a hypothetical closed surface enclosing a charge distribution?

  • Flux envelope
  • Charge shell
  • Gaussian surface (correct)
  • Electric boundary

Under electrostatic conditions, where does any excess charge reside on a solid conductor?

<p>Entirely on the surface (A)</p> Signup and view all the answers

How are small squares of area divided on a Gaussian surface?

<p>Into squares with area vectors perpendicular to the surface (A)</p> Signup and view all the answers

What does Gauss' law relate on a closed Gaussian surface?

<p>Electric fields to net enclosed charge (D)</p> Signup and view all the answers

What is the expression for the electric flux through a Gaussian surface according to Gauss's Law?

<p>The electric flux through a Gaussian surface times by ε0 is equal to the net charge enclosed (D)</p> Signup and view all the answers

When does the electric flux become zero for a rectangle in a plane parallel to the flow?

<p>When the area vector makes an angle of 90 degrees with the vector E (C)</p> Signup and view all the answers

For a Gaussian surface around a point charge, what is not included in the term qenc?

<p>Charge outside the Gaussian surface (A)</p> Signup and view all the answers

What does Gauss's Law state about the electric flux through any closed surface?

<p>The total electric flux through any closed surface is proportional to the total electric charge inside the surface (B)</p> Signup and view all the answers

What does the electric flux through a sphere centered on a point charge depend on?

<p>The permittivity of free space (ε0) (D)</p> Signup and view all the answers

What does the net charge qenc refer to in Gauss's Law?

<p>The total charge enclosed within a closed surface (C)</p> Signup and view all the answers

What is the value of the permittivity constant in SI units according to Coulomb's Law?

<p>$8.99 \times 10^9$ C$^2$ (A)</p> Signup and view all the answers

Which law states that the electric force between two point charges is inversely proportional to the square of the distance between them?

<p>Coulomb's Law (C)</p> Signup and view all the answers

According to Coulomb's Law, if two charges q1 and q2 are brought closer together, what happens to the electric force between them?

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

In Coulomb's Law, what does 'r' represent in the equation for electric force F = $\frac{q_1q_2}{4\pi\varepsilon_0 r^2}$?

<p>Distance between the point charges (A)</p> Signup and view all the answers

When finding the net force on a point charge due to two other point charges, how should you determine the direction of the force exerted on the point charge by each individual charge?

<p>Vector sum of individual forces determines direction (D)</p> Signup and view all the answers

If charge q2 were -2.0μC in a scenario involving multiple charges, what would be the expected effect on the total electric force on Q?

<p>In the negative y-direction (D)</p> Signup and view all the answers

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