# Electric Flux

Written by Jerry Ratzlaff on . Posted in Electrical Engineering

Electric flux, abbreviated as $$\phi_e$$, is how much of something goes through a given area.

## Electric Flux Formulas

 $$\large{ \phi_e = E \; S }$$ $$\large{ \phi_e = E_m \; S \; cos \; \theta }$$

### Where:

$$\large{ \phi_e }$$  (Greek symbol phi) = electric flux

$$\large{ S }$$ = area of the surface

$$\large{ E }$$ = electric field

$$\large{ E_m }$$ = magnitude of the electric field

$$\large{ \theta }$$  (Greek symbol theta) = the angle between the electric field lines and the normal to S

$$\large{ \phi }$$  (Greek symbol phi) = flux of electric field through a closed cylindrical surface

Tags: Electrical Equations