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I Faraday cage from Gauss' law alone?

  1. Oct 21, 2016 #1
    Hi.

    Is it possible to derive the properties of a Faraday cage from Gauss' law alone? I found some "derivations" which I find rather unconvincing since they somehow conclude from a vanishing flux that the E field must vanish as well.
    Some slightly more elaborate derivations use a combination of Gauss' law and a closed line integral along a path partly inside the cavity and partly inside the conductor. Since all those integrals vanish, the E field inside the cavity must vanish as well, they conclude.

    Does this really cover all possible cases?
     
  2. jcsd
  3. Oct 21, 2016 #2

    Stephen Tashi

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