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Being at zero potential

  1. Nov 23, 2015 #1
    When the shell is grounded(at zero potential), it is essentially empty of any electrical charge. Is it true?I think ,yes.But I think it should be

    When the shell is grounded, it is essentially empty of any excess electrical charge.
    Right?
     
  2. jcsd
  3. Nov 23, 2015 #2

    BvU

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    What's this tread about ? There clearly is a context missing! What shell ? What charge ? What sequence of events ? :smile:
     
  4. Nov 23, 2015 #3

    ehild

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    Wrong, a grounded conductor can be charged.
     
  5. Nov 23, 2015 #4
    You mean with non zero net charge?
     
  6. Nov 23, 2015 #5

    ehild

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    "charged" means nonzero net charge or excess charge. A neutral conductor is not charged in spite that it contains positive ions and negative electrons.
     
  7. Nov 23, 2015 #6

    BvU

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    Simple example: hollow conducting sphere with a charge Q at the center, so a mirror charge of -Q on the inside. If it's neutral there is +Q on the outside. If the outside is then grounded,, the +Q flows away. The outside is at zero potential, but the shell has net charge -Q.
     
  8. Nov 23, 2015 #7
    Thanks.
    I understood now.
     
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