It has nothing to do with a test charge.baird.lindsay said:Homework Statement
When is the net flux for a cube 0 and when is it not?
Homework Equations
∫EdA= Q/8.85E-12
The Attempt at a Solution
if you have no test charge then the flux of a cube is zero. but if you have a test charge then the net flux is the charge divided by 8.85E-12. I just want to make sure I am thinking about this correctly.
The total charge of what? ... Where is this charge located?baird.lindsay said:Q is the total charge...
SammyS said:The total charge of what? ... Where is this charge located?
Gauss's Law for a Cube is a fundamental law in electrostatics that relates the electric flux through a closed surface to the charge enclosed by that surface. It is a mathematical representation of the physical law that states that the total electric charge within a closed surface is proportional to the electric field at that surface.
Gauss's Law for a Cube is mathematically expressed as ∮SE⋅dA = Qenc/ε0, where ∮SE⋅dA represents the electric flux through a closed surface, Qenc represents the charge enclosed by that surface, and ε0 is the permittivity of free space.
A cube is often used in Gauss's Law as it is a simple and symmetrical shape that allows for easier calculation of the electric flux through its surface. However, the law applies to any closed surface, regardless of its shape.
Gauss's Law for a Cube is a generalization of Coulomb's Law, which states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Gauss's Law allows for the calculation of the electric field for more complex charge distributions, not just point charges.
Gauss's Law for a Cube has many practical applications in the study of electromagnetism, such as in the design of electric circuits and the behavior of conductors and insulators. It is also used in the analysis of electric fields in areas such as particle accelerators and plasma physics.