Electric Field of a Dielectric Sphere

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) = - $$\int \stackrel{\rightarrow}{E}$$ * $$\stackrel{\rightarrow}{dl}$$

3. The attempt at a solution

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 Blog Entries: 7 Recognitions: Gold Member Homework Help 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.
 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 $$\frac{Kq}{R}$$ but the Electric field of the outside part of the sphere I don't know what to do obs: the answer is : $$\frac{6kq}{R}$$

Blog Entries: 7
Recognitions:
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Homework Help

Electric Field of a Dielectric Sphere

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