This mathematical quantity represents the number of electric field lines intersecting a given surface. In Gauss's law, the total outward flux through a closed surface is directly proportional to the enclosed electrical charge. Engineers use this concept to model charge distribution and calculate field strengths around complex high-voltage geometries like busbars and insulator strings.
Heard on the job
Calculate the electric flux through the dielectric barrier to ensure the field strength stays well below the breakdown threshold.
Insider tip
Remember that flux is a scalar quantity, even though it is calculated using the dot product of two vectors (the electric field and the area vector).
Do not mix it up with
- Electric field: Electric field is the force per unit charge at a specific point, while electric flux is the total field passing through a whole surface.