Electric Field of a Dielectric Sphere

  • Thread starter Marvi
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Homework Statement


A uniform charge q is distributed along a sphere of radius R.
a) What is the Electric Potential in the center of the sphere?



Homework Equations


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


The Attempt at a Solution

 
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Answers and Replies

  • #2
kuruman
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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
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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]
 
  • #4
kuruman
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Use Gauss's Law to find the field in the two regions.
 

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