Register to reply

Electric Field of an n sided polygon

by lao
Tags: electric, field, polygon, sided
Share this thread:
Oct13-05, 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 mid-point of any side. We know, L=Rtan(pi/n).

I need: "the E-field on the axis of the polygon at a point distance h above it"

When n goes to infinity, we should get the same E-field as a uniform ring charge:
E= kQh/(h^2+R^2)^1.5

any help would be awesome, thx :)
Phys.Org News Partner Science news on
World's largest solar boat on Greek prehistoric mission
Google searches hold key to future market crashes
Mineral magic? Common mineral capable of making and breaking bonds
Oct14-05, 01:02 AM
Sci Advisor
HW Helper
P: 3,147
And, what have you done so far to solve the problem?
Oct14-05, 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.

Register to reply

Related Discussions
1.) Net electric field and 2.) Maximum electric field from centre of a ring Introductory Physics Homework 7
Period of an electric dipole rotating in an external electric field Introductory Physics Homework 2
Electric field in a dielectric in terms of the electric field in the vacuum Introductory Physics Homework 0
Electric Field/Electric Potential (Gradient Notation) Introductory Physics Homework 4
Calculating Electric Potential in A Uniform Electric Field Introductory Physics Homework 4