- #1

ivan314

- 1

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## Homework Statement

There are 3 concentric conductive shells with radius 1R, 2R, and 3R and charges +Q,+Q,-2Q respectively find the electric field

## Homework Equations

gauss law(electric flux)

## The Attempt at a Solution

by gauss law

for an r<R E=0 because there is no charge

for R<r<2R E=+Q/(4*pi*r

^{2}*e

_{0})

for 2R<r<3R E=+Q/(4*pi*r

^{2}*e

_{0})

here is my question for 2R<r<3R is it right or is it like this

E=+Q/(4*pi*r

^{2}*e

_{0})+Q/(4*pi*s

^{2}*e

_{0})

where s is a radius 0<s<3R

I mean in the space 2R<r<3R does the field of the conductive shell with radius 1R affect here? or the field is affected just by the shell of radius 2R

and the same for 3R<r here the field is afected by all the shells or just by the one with radius 3R

thanks beforehand.