The whole coil thing is pretty basic & i'm not very mathematical so i look at it like this.
We have a very simple circuit , positive & negative & we connect 'em together but we throw a piece of metal in the loop. The metal tries to resist the voltage & the voltage is trying to get through it, consequently the metal gets hot because it just can't cope with the heavy traffic, it's resistance is limited.
If we put a smaller piece of metal in the same loop, even less traffic can get through & it gets even hotter, even less resistance. If we go too small, it will give up & break. It's like a fuse !
Ohms is the way to measure the resistance of any given conductor & gives us the visual numerical reference to guide us.
In theory if your coil is of a higher resistance, it can still get just as hot, just as quick if there's enough voltage on tap trying to get through it. Thing is, we are limited to the size & type of safe battery we use. All we have to do is work out how much power we've got, work out how much heat we want to get our desired result & wahey !
How do we do that ? I dunno, i'm not Einstein so i just improvise, trial & error but i don't go too low anyway because there's just no need to for a nice full flavoured rounded vape & keeping in mind that there are loads of other people trying to get with this game who also don't get it, these are not bad guide lines. My coils are above 0.6ohm & below 1.5ohm & my batteries are sony vtc4 30amp rated & i don't use VV & VW.
At least with your Variable Wattage device you can pick a setting that works & as long as the device can deliver the desired power for the coils, you ought to get a good vape. If you're not & the device won't give any more power, it might be time to wrap some lower resistance coils to meet with the devises limitations. Just not too low that's all.
Wicking ! Even easier, just allow enough wick for the liquid to travel along at a good steady rate but not so much that it causes a traffic jam.
If Einstein is here, he might like to get technical !
