Flux through a closed region. The net flux is proportional to the strength of the associated charge enclosed within a volume. F net = F out – F in Outflowing charge called source, inflowing charge called sink Flux measured through surfaces enclosing volume. Gauss’s Law.
What is the electric field inside an arbitrarily shaped conductor with a surface area of 10.0 m2 and a total surface charge of 45.0 C?
No enclosed charge, so by Gauss’s Law, field is 0!
A rectangular sheet is 50.0 km by 250.0 km. It has a total charge of 300.0 MC. What is the electric field 10.0 m above the center of the sheet?