Grimm's Law was a sound change that turned k into h when Proto-Germanic split off from Proto-Indo-European. The original form was something like *kwel which turned into *hwel in Proto-Germanic, then eventually wheel in English and hjul in Scandinavian languages.

The other words (chakra, circle, cycle) are from some kind of reduplicated form like *kwekwlos, via different routes.

All those words derive from the same Proto-Indo-European root, *kwel- : https://www.etymonline.com/word/*kwel-

> In Sweden/DK/NO we call it “hjul” which is pronounced like the American nicotine vape brand juul, quite similar to English

I can't quite tell, but if you're saying that the American brand Juul is pronounced in English as if it were the word "you'll", that is not correct. Americans don't think of the letter J that way.

(If you're saying Nordic hjul and English wheel are similar, they are cognates.)