Can we transfer the whole charge of a body to another body?

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Discussion Overview

The discussion revolves around the question of whether it is possible to transfer the entire charge of one body to another body, specifically in the context of charged conductors and the principles of electrostatics. The scope includes theoretical considerations and practical implications of charge transfer between conductors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that enclosing a charged conductor (A) with an uncharged conductor (B) and connecting them with a wire could allow the entire charge to transfer from A to B.
  • One participant suggests that constructing a Gaussian surface between the two bodies would indicate that no electric field exists in that region once equilibrium is reached, implying that all charge must reside in B.
  • Another participant expresses uncertainty about the practical feasibility of the proposed method, despite agreeing with the theoretical aspect.
  • Several participants note that charge resides on the outer surface of conductors and suggest that connecting conductors A and B creates a single conductor, allowing charge transfer to occur to the outer surface of B.
  • One participant questions whether their understanding is correct or if they are missing any important details regarding the charge transfer process.

Areas of Agreement / Disagreement

Participants generally agree on the theoretical possibility of transferring charge from one conductor to another, but there is uncertainty regarding the practical implementation of this process. Some viewpoints are reiterated, while others express a need for further confirmation.

Contextual Notes

There are limitations in the discussion regarding assumptions about the behavior of electric fields, the nature of the conductors, and the practical aspects of charge transfer that remain unresolved.

oliverkahn
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When I asked "Can we transfer the whole charge of a body to another body?"

my colleague replied:

"If charged body (say 5 Coulomb) is any charged conductor ##A##, it can be done by enclosing ##A## completely by second uncharged conductor ##B## and connecting them by a conducting wire ##B## will acquire 5 Coulomb and ##A## becomes uncharged.

Is this true? Can we transfer the whole charge of a body to another body?
 
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I believe this is true, at least theoretically. Construct a Gaussian surface between the two bodies, there must be no electric field in the region between A and B once equilibrium has been reached. That constrains ##Q## enclosed within the surface to be zero, so all the charge must reside in B. Assuming the wire is negligible/stores no charge.

As for if it would work in practice, I've no idea!
 
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etotheipi said:
I believe this is true, at least theoretically. Construct a Gaussian surface between the two bodies, there must be no electric field in the region between A and B once equilibrium has been reached. That constrains ##Q## enclosed within the surface to be zero, so all the charge must reside in B.

As for if it would work in practice, I've no idea!
Thank you for your answer. I wanted to make sure if it works in practice. I guess it works so, but needs conformation.
 
I think I got the solution :

The charge always goes to the outer surface of a conductor. When we connect the two conductors ##A## and ##B## by a conducting wire, the whole system becomes a single conductor.

So the surface of "that" single conductor ##C## will be the surface of the larger conductor ##B##. So the charge will reside on the outer surface of larger conductor ##B##.

Thus we can transfer the whole charge of a conductor to another conductor.

Am I right or missing anything.
 
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oliverkahn said:
I think I got the solution :

The charge always goes to the outer surface of a conductor. When we connect the two conductors ##A## and ##B## by a conducting wire, the whole system becomes a single conductor.

So the surface of "that" single conductor ##C## will be the surface of the larger conductor ##B##. So the charge will reside on the outer surface of larger conductor ##B##.

Thus we can transfer the whole charge of a conductor to another conductor.

Am I right or missing anything.

Yes I think that's right, on second thoughts it's perhaps even easier to consider a Gaussian surface just below the surface of conductor B, since that requires fewer logical leaps.
 
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