Electric Flux Questions (about the definition)

AI Thread Summary
Electric flux is defined as the electric field passing through a unit area perpendicular to the electric field lines, represented by the formula Φ = ∫ E⋅dA. The discussion contrasts this with pressure, which is defined as force per unit area, leading to the formula P = F/A. The confusion arises from both quantities being vector quantities acting per unit area, yet electric flux is a product while pressure is a quotient. The distinction lies in the nature of the quantities involved; electric flux involves the field multiplied by the area, rather than the field divided by the area. This clarification highlights the fundamental differences in how these physical concepts are mathematically represented.
AlphaLearner
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I can say that Electric Flux is Electric field passing per unit area perpendicular to electric field lines. But the formula came up as Φ = ∫ E⋅dA. Well, take the case of pressure! That is force acting per unit area perpendicular to direction of force. But it's formula came up as P = F/A.
Now my problem is, when both of those quantities are defined as some vector quantity acting per unit area perpendicular to direction of that vector, Why electric flux as product and pressure as quotient? The word "per" should bring 'Divided by' in mind but why product is taken for flux?
 
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AlphaLearner said:
I can say that Electric Flux is Electric field passing per unit area perpendicular to electric field lines.
It is not the field per unit area, it is the field times the area.
 
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Dale said:
It is not the field per unit area, it is the field times the area.
Thank you!
 
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