Current flow

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KurtVD

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I always wondered where the current flows through in a Clapton coil (or any other coil that consists of multiple wires). I always thought that electricity is using the past of least resistance, and if that was true, it should only flow through the wire that has less resistance, not both of them.
Turns out I was wrong, here’s a quote from an electronics forum:

“"The popular notion that current follows the path of least resistance just isn’t true. Current follows the paths of all resistances in proportion to their conductance."”

so it would seem that current does flow through both wires :)
 

ShowMeTwice

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Superuser187

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I think maybe the right way to say it simply is that more current will flow on the path with the least resistance i guess?

In vaping with contact coils we can see why this can be a problem tho when we get hotspots when the current jumps from one wrap to another taking the shorter path of least resistance making it get hotter in that part of the coil.
 

borno

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It doesn't matter what kind of coil (resistor) you have installed in an RBA. Current (I) will flow through the entire coil (R) {and circuit} when energy (V) is applied. Like so:

Yeah Kirkoff ! :)

View attachment 970525

A coil is a very simple resistor. Ohm's (Ω) are it's known value.
 

zoiDman

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    ShowMeTwice

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    Somewhere, Robert Gair is Smiling.

    LOL

    BTW - Here is something else to Think about.



    Although maybe Not before one has had their Mourning Coffee.

    Excellent video. I waited until I was sufficiently caffeinated before watching. FWIW, I did not select the correct answer.

    You might appreciate this one.
     
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    BillW50

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    I always wondered where the current flows through in a Clapton coil (or any other coil that consists of multiple wires).

    You can think of it like a multiple wall outlet. As you can plug in more than one load at a time. You can plug in say a 15A device and even a 0.25A device at the same time. Every device you add are all in parallel connected to each other.

    Same with say a Clapton coil. Each wire is connected in parallel to the source. But the core is usually thicker than the wrap and the wrap is often dozens the length of the core wire. So what does this mean? The core gets far more current than the wrap. The wrap itself (the resistance is very high) doesn't get enough current to even get up to vaping temperatures. So the core creates most of the heat and the wrap very little.

    But the nifty thing of the wrap is, that it helps as a wick and as a radiator for the core. And frankly, it works very well. :D
     
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