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Homework Help: What is the electric field at the center (in N/C)?

  1. Apr 6, 2008 #1
    A total of eight tiny conducting spheres, each carrying a charge of -110 nC, are placed one each at the corners of a cube 1.2 m on a side. Find the potential at the center (in V).

    What is the electric field at the center (in N/C)?
  2. jcsd
  3. Apr 6, 2008 #2


    User Avatar

    Just add up the eight potentials.
    Use symmetry for E.
  4. Apr 6, 2008 #3
    I understand, but how do I find the potential to begin with?
  5. Apr 6, 2008 #4
  6. Apr 7, 2008 #5
    Just a Clarification

    should leave the q as neg. and nC or convert to C and make positive?;
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