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I Faraday cage and its risk

  1. Oct 12, 2018 at 5:00 AM #1
    In the Faraday cage, after injecting the charge, it takes about a nano second for charge to be distributed over the external surface. Why doesn't one become electrocuted in this very little time (nano second)?
     
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  3. Oct 12, 2018 at 5:35 AM #2

    Vanadium 50

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    During this time how much charge is going through you?
     
  4. Oct 12, 2018 at 6:13 AM #3
    Thanks, another question in this context arises about the Faraday cage which is made of grid lattice of wires (see: https://makezine.com/2007/06/20/tesla-faraday-cage). In the case of a cage made of wire, what is the external surface of the cage? Why don't the charges go inside the cage in contact with the person?
     
  5. Oct 15, 2018 at 12:30 PM #4

    osilmag

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    Current is going to flow along the path of least resistance. So, the charges will flow through the metal wires to ground instead of the air gap and your flesh due to higher reactance/resistance.
     
  6. Oct 15, 2018 at 12:48 PM #5

    rcgldr

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    Video example of a Faraday cage "suit" used to work on high voltage (500kv or 750kv) power lines:

     
  7. Oct 15, 2018 at 5:29 PM #6
    It will also take time, before the effects of any charge outside the cage are felt by someone inside. This speed is limited by the speed of light, and the electric field will reach the cage first,and start to produce induced charges that cancel the field before it can reach anyone inside.
     
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