Two large,flat,horizontally oriented plates are parallel to each other,a distance d apart.Half way between the two plates the electric field has magnitude E.If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?
A) 4E
B) 2E
C) E
D) 0
E) E/2

Question

Quizplus · Accepted Answer

The electric field between two parallel plates is given by $E = \frac{\sigma}{\varepsilon_0}$, where $\sigma$ is the surface charge density and $\varepsilon_0$ is the permittivity of free space. This formula shows that the electric field is independent of the distance between the plates, so halving the distance does not change the magnitude of the electric field.

Two Large,flat,horizontally Oriented Plates Are Parallel to Each Other,a Distance