Electric Flux in a Closed Space: Volume, Area & Benefits

AI Thread Summary
Electric flux in a closed space can be calculated using the equation phi = Q/ε0, which relates charge to the electric field. This concept applies primarily to volume rather than area, as it quantifies the total electric field passing through a surface. Understanding electric flux is crucial for predicting the behavior of charged particles, such as electron beams, as it helps in analyzing the electric and magnetic fields along their paths. Knowledge of electric flux can also aid in designing various electrical systems and devices. Overall, mastering electric flux is essential for applications in physics and engineering.
FS98
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I believe the electric flux within a closed space can be found with the equation phi = Q/ε0. Can this be used for volume and area, or just volume?

Also what good does this do. Why would I want to know the electric flux of something?
 
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FS98 said:
Why would I want to know the electric flux
e.g. If you wanted to know how an electron beam will behave, it is important to know the Electric (and Magnetic) Fields along its path.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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