Being at zero potential

  • Thread starter gracy
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Main Question or Discussion Point

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?
 

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  • #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:
 
  • #3
ehild
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Wrong, a grounded conductor can be charged.
 
  • #4
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a grounded conductor can be charged
You mean with non zero net charge?
 
  • #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.
 
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  • #6
BvU
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You mean with non zero net charge?
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.
 
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Thanks.
I understood now.
 

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