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Veritasium "How Electricity Actually Works"
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hamster_nz:

--- Quote from: electrodacus on May 02, 2022, 12:32:28 am ---Here is the super simplified example

  ________________ common plate
  +++++++

  _______/  ________
  -----------


This simplified example of Derek's experiment.
Those are real capacitors so the plates have both resistance and inductance. Capacitor on the left is the charged one while the one on the right is discharged.
What do you think happens when you close the switch ?

--- End quote ---

You say "There is no electric field before closing the switch". I don't think this is true. Here is the same diagram with two negative charges electrons sitting between the plates of your capacitor(s). What way do they move? and why do they move, and what provides the energy for them to move?


  ________________ common plate
  +  +  +  +  +  +  +

     -                 -

  _______/  ________
  -----------

Also the positive charges are way too close together. Their mutual repulsion will cause them to spread out over the plate pretty much uniformly.
electrodacus:

--- Quote from: rfeecs on May 02, 2022, 01:01:06 am ---
--- Quote from: electrodacus on May 02, 2022, 12:32:28 am ---What do you think happens when you close the switch ?

--- End quote ---

 :horse:

--- End quote ---

Here is the exact example if you do not like the simplification

  ________________________________________________
  +++++++++++++++++++++              ___________________
                                                1KOhm___________________
  _____________________/   _________________________
  -----------------------------------



Those are real capacitors so the plates have both resistance and inductance. Capacitor on the left is the charged the equivalent of the battery and the two capacitors on the right are representing the transmission line and they are in series with 1KOhm resistor. The ends are not closed as is not relevant for the first few ns.
What do you think happens when you close the switch ?
hamster_nz:

--- Quote from: electrodacus link=topic=322795.msg4150093#msg4150093 ---Here is the exact example if you do not like the simplification

--- End quote ---

Can you please upgrade to at least crayons and paper? Because this is what the rest of us are looking at:
electrodacus:

--- Quote from: hamster_nz on May 02, 2022, 01:07:32 am ---You say "There is no electric field before closing the switch". I don't think this is true. Here is the same diagram with two negative charges electrons sitting between the plates of your capacitor(s). What way do they move? and why do they move, and what provides the energy for them to move?


  ________________ common plate
  +  +  +  +  +  +  +

     -                 -

  _______/  ________
  -----------

Also the positive charges are way too close together. Their mutual repulsion will cause them to spread out over the plate pretty much uniformly.

Also the unconnected wire will have potentials at either end, as one end is closer to a large static charge.

--- End quote ---

That is incorrect and I noticed the same wrong explanation in Derek's video. The electrons and holes will be equal and they will extend just up to the switch even on the common plate.
Only after the switch is closed electrons and holes will move symmetrically on top and bottom plate.
Keep in mind the drawing is nowhere near to scale. There may be just 0.1mm between plates and plates may be a few meters long for the charged capacitor and then for the discharged capacitor that represents the transmission line the distance between plates may be order of magnitude higher but even if the same 0.1mm there charge will end at the switch both on top and bottom plates.
electrodacus:

--- Quote from: hamster_nz on May 02, 2022, 01:17:02 am ---
--- Quote from: electrodacus link=topic=322795.msg4150093#msg4150093 ---Here is the exact example if you do not like the simplification

--- End quote ---

Can you please upgrade to at least crayons and paper? Because this is what the rest of us are looking at:

--- End quote ---

Sorry I did not expect the forum will scale with monitor resolution (you likely watch this on your phone).
I made is much shorter hopefully it will fit.
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