Current flow

[KurtVD]

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

 

[UncLeJunkLe]

so it would seem that current does flow through both wires

Would kinda have to otherwise the other wires that make up the coil would serve no purpose.

 

[ShowMeTwice]

 

[Superuser187]

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.

 

[Superuser187]

View attachment 970511

OMG!

 

[borno]

View attachment 970511

Dayum!

 

[ShowMeTwice]

 

[Superuser187]

View attachment 970524

Thats my daily basic build. I dont vape anything less than that

 

[ShowMeTwice]

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:

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

 

[ShowMeTwice]

Thats my daily basic build. I dont vape anything less than that

I'm much more basic.

But yeah, coil p*rn rocks!

Here you go, Coil Art. Take your pick!

 

[borno]

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.

 

[ShowMeTwice]

Ohm's Law describes the relationship between voltage and current across a resistive element.

Kirchhoff's Law describes the behaviour of current and voltage respectively in a circuit branch.

 

[ShowMeTwice]

There are several Coil P0rn threads on ECF. This one started by our @AngeNZ is the most recent. Coil P0rn

Several members made contributions.

 

[borno]

Kirkofflaw states that the sum of voltage drops across a loop equals zero

D.C. anyways A.C. is another thing altogether

 

[zoiDman]

View attachment 970511

Somewhere, Robert Gair is Smiling.

LOL

BTW - Here is something else to Think about.



Although maybe Not before one has had their Mourning Coffee.

 

[zoiDman]

Kirkofflaw states that the sum of voltage drops across a loop equals zero

D.C. anyways A.C. is another thing altogether

Yeah... Kirchhoff was a Very Bright guy.

https://www.raeng.org.uk/publicatio...st law applies to,flowing out of the junction.

 

[ShowMeTwice]

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.

 

[KurtVD]

Would kinda have to otherwise the other wires that make up the coil would serve no purpose.

Not necessarily, the wire with the higher resistance could be heated simply by being in contact with the other wire (if the ‘least resistance’ thing was true).

 

[BillW50]

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.

 

[BillW50]

Stapled Staggered Fused Clapton