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Can a conducting metal plate connected to a +ve terminal of a battery gets charged?

  1. Sep 5, 2006 #1
    Hi,

    We know that when we connect the two parallel plates to a battery it will hold a +ve charge on the plate connected to positive terminal and -ve charge on the other plate. If we only connect one plate to the positive terminal, can it be charged? Isn't the positive terminal is at a higher potential and positively charged? If so, can metal plate connected to it become charged? What process governs if it cannot be charged? Since conductors having charges when connected reaches an equilibrium of distribution of charges to maintain same potential, can we expect this in the case of battery with metal plate connected to positive terminal? if not why?

    Bob
     
  2. jcsd
  3. Sep 5, 2006 #2

    NoTime

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    Yes, it will get charged.
    But, I wouldn't bother mentioning it to anyone.
    Nobody is going to care much about an extra electon or two.

    Battery terminals have a relative, to each other, potential.
    Saying one has a higher potential doesn't really mean anything.
    As in, higher relative to what?
     
  4. Sep 6, 2006 #3

    Meir Achuz

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    A single metal plate will have a small self capacitance C_self.
    It can be calculated for a simple shape, but will be much less than the capacitance of two plates. The charge on the single plate would be
    q=V*C_self.
     
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