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Homework Help: Electrical induction and electric field in sphere

  1. May 4, 2012 #1
    Can you get me on tracks with this assignment?

    1. Find out and show in graphs electric induction D(r) and electric field E(r) if the field is created by a charge q, which is even in a hollow dielectric sphere. R1=2 cm, R1=5 cm, εa=2ε0

    So i have a sphere which outter shell is made from dielectric, so i need to calculate eletctric induction only in dielectric sphere? This sphere R would be like R=R1-R2.

    and how to find electric field?

    Tha main problem is how to calculate with the hole in the dielectric sphere, does it make any differeces?
  2. jcsd
  3. May 4, 2012 #2
    Calculate the induction D(r) anywhere in the space by Gauss's law in dielectric, and find E(r) by dividing ε(r)
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