18 Questions
What is the fundamental characteristic of an electric charge?
Its ability to exert a force
When a charged object retains its charge temporarily without immediate transfer of electrons, what is this condition called?
Resting charge
What is the term for a hypothetical closed surface enclosing a charge distribution?
Gaussian surface
Under electrostatic conditions, where does any excess charge reside on a solid conductor?
Entirely on the surface
How are small squares of area divided on a Gaussian surface?
Into squares with area vectors perpendicular to the surface
What does Gauss' law relate on a closed Gaussian surface?
Electric fields to net enclosed charge
What is the expression for the electric flux through a Gaussian surface according to Gauss's Law?
The electric flux through a Gaussian surface times by ε0 is equal to the net charge enclosed
When does the electric flux become zero for a rectangle in a plane parallel to the flow?
When the area vector makes an angle of 90 degrees with the vector E
For a Gaussian surface around a point charge, what is not included in the term qenc?
Charge outside the Gaussian surface
What does Gauss's Law state about the electric flux through any closed surface?
The total electric flux through any closed surface is proportional to the total electric charge inside the surface
What does the electric flux through a sphere centered on a point charge depend on?
The permittivity of free space (ε0)
What does the net charge qenc refer to in Gauss's Law?
The total charge enclosed within a closed surface
What is the value of the permittivity constant in SI units according to Coulomb's Law?
$8.99 \times 10^9$ C$^2$
Which law states that the electric force between two point charges is inversely proportional to the square of the distance between them?
Coulomb's Law
According to Coulomb's Law, if two charges q1 and q2 are brought closer together, what happens to the electric force between them?
Increases
In Coulomb's Law, what does 'r' represent in the equation for electric force F = $\frac{q_1q_2}{4\pi\varepsilon_0 r^2}$?
Distance between the point charges
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?
Vector sum of individual forces determines direction
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?
In the negative y-direction
Explore the fundamental characteristics of electric charges, the behavior of objects with opposite polarity, and the concept of electrostatic fields and forces. Learn about temporary charge retention and the state of rest in charged objects.
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