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"Veritasium" (YT) - "The Big Misconception About Electricity" ?
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rfeecs:

--- Quote from: SilverSolder on January 21, 2022, 09:39:14 pm ---I am struggling to understand how the fields will be able to carry energy to the bulb.  And if they do make it in...  wouldn't the tortuous path they have to take to get there mean there would be more resistance, compared to a layout that does not impede the fields in any way?

--- End quote ---

Nope.
SilverSolder:

--- Quote from: rfeecs on January 21, 2022, 09:45:36 pm ---
--- Quote from: SilverSolder on January 21, 2022, 09:39:14 pm ---I am struggling to understand how the fields will be able to carry energy to the bulb.  And if they do make it in...  wouldn't the tortuous path they have to take to get there mean there would be more resistance, compared to a layout that does not impede the fields in any way?

--- End quote ---

Nope.

--- End quote ---

How would you draw the magnetic lines of force in this example?   I really am struggling to see it.  I'm probably overlooking something obvious.
ogden:

--- Quote from: SilverSolder on January 21, 2022, 09:39:14 pm ---I am struggling to understand how the fields will be able to carry energy to the bulb.

--- End quote ---

As current which will light the bulb is purposefully not specified, you can get as creative with wire diameter as as you want. As long as single electron can squeeze through, challenge is still valid.
rfeecs:

--- Quote from: SilverSolder on January 21, 2022, 09:50:06 pm ---How would you draw the magnetic lines of force in this example?   I really am struggling to see it.  I'm probably overlooking something obvious.

--- End quote ---
It would be like a coaxial cable with a very thin dielectric.
bdunham7:

--- Quote from: SilverSolder on January 21, 2022, 09:39:14 pm ---I am struggling to understand how the fields will be able to carry energy to the bulb.  And if they do make it in...  wouldn't the tortuous path they have to take to get there mean there would be more resistance, compared to a layout that does not impede the fields in any way?

--- End quote ---

In the DC case, no matter how you encase the circuit or what external static fields you apply, the Poynting math always miraculously works out to the same end solution that matches DC circuit theory, regardless of how different the intermediate steps may be.  And every trivial change in the DC circuit itself--wire resistance, diameter, length, etc,--does result in a change.

So the result is that the energy is 'flowing' in those fields external to the wire, but there is no possibility of affecting, blocking or intercepting that energy flow no matter what you do in that space.  However, in the wire where the energy is not flowing, any change at all--like hollowing out the wire a bit--does make a difference.  Counterintuitive?   :)
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