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Question about induction

  1. May 19, 2005 #1
    Induction --> Positively Charged rod is brought near neutral rod.
    Conduction --> Charged rod touches the neutral rod creating a transfer in charge

    What I don't understand is that why "Induction" causes the two rods to have opposite charges. Is it because the positively charge rod repels the positive charges of the neutral rod and attracks the negative charge?

  2. jcsd
  3. May 19, 2005 #2


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    Yes to your thoughts on induction. The neutral rod remains neutral, but the average distance between "like charges" is greater than the average distance for the "unlike charges". In a nonconduction rod, the effect is called polarization. The individual mollecules become polarized with the like charges a bit farther away from the charged rod than the unlike charges.
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