Final answer:
Area A represents outward electric field from a positively charged plane, while Area E represents inward electric field towards a negatively charged plane.
Step-by-step explanation:
The difference between area A and area E on the depicted airport is that area A represents the region where the electric field is directed outward from a positively charged plane, while area E represents the region where the electric field is directed inward towards a negatively charged plane. The magnitude of the electric field in both areas is the same, but the direction is opposite.
At points in area A, the electric field and area vectors point in the same direction, resulting in a positive flux of electric field through the shaded surface. On the other hand, at points in area E, the electric field and area vectors point in opposite directions, resulting in a negative flux of electric field.
Flux is a measure of the amount of electric field passing through a given surface, and it depends on both the magnitude and direction of the electric field and area vectors.