Hoping users here can help she some light and settle a debate at home.
I believe that the smooth and bumpy sides of a coil do not represent the poles. Example> In a pair, both smooth sides do not represent north and bumpy south or vice versa.
In one pair of coils, one smooth side is north, the other smooth side is south and vice versa.
Am I correct? ( I have a C5 and was explaining the importance of not inter mingling the different coils because you may be canceling them out)
I’m hoping users can help us settle this month long debate.