What are the units of electric flux?
Answer: Newtons * (meters squared) / Coulombs
Gauss' Law describes a relationship between the electric flux through a closed surface and ... what ?
Answer: the charge enclosed by that surface
An iron safe has a net positive charge on its walls.
The safe is closed (and empty).
Describe the direction of the electric field
a) just above the exterior surface of the top of the safe
b) just below the interior surface of the top of the safe
Answer: Just outside the top of the safe, the electric field points upwards, perpendicular to the surface. Everywhere inside the safe, the electric field is zero.
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