Question

So we did one of the most basic experiments in my physics 231class which deals with electricity and magnetism. The lab had ususe parallel plates and point charges and "map" electrical fields.The thing is, I dont know for sure if we did the experimentright.

For the parallel plates, ideally, there is a constant voltagemagnitude perpendicular to the plates (as in connecting them sincethe plates are parallel). However, in our experiment, we found thatthe voltage faded the farther you got away from the positiveelectrode, not stay constant. Is this what is supposed to happen ordid we mess something up? I just need to know the expected outcomeof the parallel plates / point charge experiment.