Question

two equal and opposite charges +q and -q are separated by a distance 2a . name this arrangement​

Answer 1

Answer:

cannot understand what is the question

Answer 2

Answer:

Consider a thin plane infinite sheet having positive charge density σ. In order to find the electric field intensity at a point p, which is at a perpendicular distance r from the plane shell, we choose a closed cylinder of length 2r, whose ends have an area A as our Gaussian surface. The cylinder is arranged to pierce the sheet perpendicularly as shown.