Electric Field of a Dielectric Sphere


by Marvi
Tags: dielectric, electric, field, sphere
Marvi
Marvi is offline
#1
Nov7-09, 12:48 PM
P: 2
1. The problem statement, all variables and given/known data
A uniform charge q is distributed along a sphere of radius R.
a) What is the Electric Potential in the center of the sphere?



2. Relevant equations
V(r1)-V(r0) = - [tex]\int \stackrel{\rightarrow}{E}[/tex] * [tex]\stackrel{\rightarrow}{dl}[/tex]


3. The attempt at a solution
Phys.Org News Partner Science news on Phys.org
SensaBubble: It's a bubble, but not as we know it (w/ video)
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Microbes provide insights into evolution of human language
kuruman
kuruman is offline
#2
Nov7-09, 03:52 PM
HW Helper
PF Gold
kuruman's Avatar
P: 3,444
You will need to find the electric field both inside and outside the field and integrate the expression you posted from infinity to R using the field outside and then from R to zero using the field inside.
Marvi
Marvi is offline
#3
Nov7-09, 03:56 PM
P: 2
Thanks for answering, but actually I can't find the expression for the second part of the Electric field

The first is inside the sphere wich leads to [tex]\frac{Kq}{R}[/tex] but the Electric field of the outside part of the sphere I don't know what to do

obs: the answer is : [tex]\frac{6kq}{R}[/tex]

kuruman
kuruman is offline
#4
Nov7-09, 09:18 PM
HW Helper
PF Gold
kuruman's Avatar
P: 3,444

Electric Field of a Dielectric Sphere


Use Gauss's Law to find the field in the two regions.


Register to reply

Related Discussions
Electric Field inside uniformly charged dielectric sphere Advanced Physics Homework 8
Electric Field inside and outside of Dielectric sphere Introductory Physics Homework 0
Dielectric Sphere in Field of a Point Charge Advanced Physics Homework 1
Dielectric Sphere in Electric Dipole Classical Physics 1
Electric energy of a dielectric sphere!! Introductory Physics Homework 2