Physics III - Electric Charge Activity
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Questions and Answers

What is the fundamental physical property that causes objects to feel attraction or repulsion towards one another?

  • Kinetic Energy
  • Magnetic Field
  • Electric Charge (correct)
  • Electric Current

Which type of object has more protons than electrons?

  • Conductors
  • Neutrally Charged Objects
  • Negatively Charged Objects
  • Positively Charged Objects (correct)

According to the Law of Charges, what happens when like charges interact?

  • They remain unchanged
  • They repel each other (correct)
  • They neutralize each other
  • They attract each other

What type of materials permit electrons to flow freely from particle to particle?

<p>Conductors (C)</p> Signup and view all the answers

Which type of material allows charges to be transferred across the entire surface of the object?

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

If charge is transferred to an insulator at a given location, what happens to the excess charge?

<p>It remains at the initial location of charging (D)</p> Signup and view all the answers

Which of the following materials is NOT an example of a conductor?

<p>Plastics (C)</p> Signup and view all the answers

In charging by conduction, what does the process involve?

<p>Contact of a charged object to a neutral object (C)</p> Signup and view all the answers

What is the purpose of grounding a charged object?

<p>To provide a path for excess charges to flow to the Earth (A)</p> Signup and view all the answers

After rubbing a material with silk, what determines the charge of the material?

<p>The material's ability to gain or lose electrons (B)</p> Signup and view all the answers

According to the reflection section, what type of ion is formed if an atom has more negative charges than positive charges?

<p>Negative ion (C)</p> Signup and view all the answers

Where would you refer to determine the charge of objects after rubbing them together?

<p>Scientific Reference Materials (D)</p> Signup and view all the answers

What is the electric flux through a surface with an area of $6.2 \times 10^{-4} m^2$ when an electric field of $5.7 \times 10^{13} N/C$ makes an angle of 45 degrees with the surface vector?

<p>$3.98 \times 10^{10}$ Nm²/C (A)</p> Signup and view all the answers

When representing electric field lines, what do the pattern of lines point towards?

<p>Direction that a positive test charge would accelerate (A)</p> Signup and view all the answers

In Gauss's law, what does it mean when the net charge inside a closed surface is zero?

<p>The electric flux through the surface is zero (A)</p> Signup and view all the answers

What is the consequence of multiple charges contributing to the total electric field at a given point in space?

<p>The individual fields due to each charge are added to get the total electric field (B)</p> Signup and view all the answers

If a closed surface encloses a net charge of $8.0 \times 10^{-6} C$, and the permittivity of free space is $8.85 \times 10^{-12} C^2/Nm^2$, what is the electric flux through this surface?

<p>$7.08 \times 10^{-6}$ Nm²/C (D)</p> Signup and view all the answers

In the context of Gauss's Law, how is electric flux defined?

<p>The product of electric field strength and the surface area of a closed surface (C)</p> Signup and view all the answers

What is the formula to calculate the electric force between two point charges?

<p>$F = k \frac{Q_1 Q_2}{d^2}$ (D)</p> Signup and view all the answers

In the context of electric charges, what does Gauss's Law state?

<p>The net electric flux through a closed surface is equal to the total charge enclosed by that surface divided by the permittivity of free space. (C)</p> Signup and view all the answers

What is the unit of Coulomb's constant, k, in the formula for electric force?

<p>$Nm^2/C^2$ (B)</p> Signup and view all the answers

How does the principle of superposition apply to electrostatic forces?

<p>It states that the net force on any one charge is the vector sum of forces due to all other charges present. (B)</p> Signup and view all the answers

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