Electric Flux Flashcards
1
Q
What is electric flux?
A
A measure of the flow of an electric field through a surface
2
Q
What direction is the electric flux?
A
If E points out of the surface then outward electric flux
If E points into the surface then inward electric flux
A used to denote the surface vector S
3
Q
What is the equation for electric flux through a surface?
A
Φ_E = E.S
Where S points in the direction normal to the surface
⃗
4
Q
What is the equation for the electric flux for an arbitrarily shaped surface?
A
Φ_E = ∬E⋅dS
Integrated over S
If the surface is closed use a circle through the double integral
5
Q
In what direction does dS point?
A
Always points outwards
