
#1
Oct1305, 08:53 PM

P: 1

We have an n sided polygon, each side is length 2L and R is the distance from the center of the polygon to the midpoint of any side. We know, L=Rtan(pi/n).
I need: "the Efield on the axis of the polygon at a point distance h above it" When n goes to infinity, we should get the same Efield as a uniform ring charge: E= kQh/(h^2+R^2)^1.5 any help would be awesome, thx :) 



#2
Oct1405, 01:02 AM

Sci Advisor
HW Helper
P: 3,149

And, what have you done so far to solve the problem?



#3
Oct1405, 04:07 AM

P: n/a

Simple: do we have any symmetry here? Find the field to a single side (a finite line segment).
Hope this helps. 


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