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Charge sprayed onto a conductor

  1. Feb 3, 2012 #1
    An irregular neutral conductor has a hollow cavity inside of it and is insulated from its surroundings. An excess charge of 16.0 nC is sprayed onto this conductor.

    A) Find the charge on the inner surface of the conductor.

    B) Find the charge on the outer surface of the conductor.

    C) Without touching the conductor, a charge of -12.0 nC is inserted into the cavity through a small hole in the conductor. Find the charge on the inner surface of the conductor in this case.

    D) Find the charge on the outer surface of the conductor in this case.

    ATTEMPT:

    A) zero

    B) 16nC

    C) 12nC

    D) q+q'= 4nC

    can someone check that i did these right? thanks
     
  2. jcsd
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