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Electric Field of a Dielectric Sphere 
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#1
Nov709, 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 


#2
Nov709, 03:52 PM

HW Helper
PF Gold
P: 3,443

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.



#3
Nov709, 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] 


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