Parallel plates: 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 parallel plates is uniform and does not depend on the distance between the plates. Therefore, even if the separation is reduced, the electric field magnitude remains E.

Parallel Plates: Two Large, Flat, Horizontally Oriented Plates Are Parallel