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Homework Help: Static Electricity

  1. Dec 1, 2008 #1
    Hey guys, I have a physics exam tomorrow. I found a question that I can't solve.

    Rubbing a polythene rod with a cloth makes the polythene negatively charged but rubbing a brass rod in this way will not charge it. Why can't the brass rod be charged this way?

    Thanks
     
  2. jcsd
  3. Dec 1, 2008 #2

    turin

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    Homework Helper

    Would you consider brass to be a conductor or an insulator?
     
  4. Dec 1, 2008 #3
    Brass is a conductor isn't it?
     
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