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Induction or nothing?

  1. Mar 31, 2012 #1
    1. The problem statement, all variables and given/known data

    By what method will a positively charged rod produce a negative charge on a conducting sphere that is placed on an insulating surface.

    2. Relevant equations

    a) by means of conduction b) by means of induction c) by means of convection d) none of the choice are correct

    3. The attempt at a solution

    I am guessing d because the rod will only be able to polarize... and if it was conducted the negative charge would flow to the rod which will leve the sphere positive...
     
  2. jcsd
  3. Apr 1, 2012 #2
    really 385 views and no response...?
     
  4. Apr 1, 2012 #3

    tiny-tim

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    hi freeofwork :smile:

    well, it's obviously not conduction or convection, and i don't think it comes within the strict definition of induction, so that does leave d) :wink:
     
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