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by Itaxpica 2841 days ago
This is a common misconception, but the prohibition against using electronics on Shabbat has nothing to do with fire; it has to do with completing a circuit since "completing a construction" is one of the 39 specifically banned activities
2 comments

It seems that both justifications have been used.

https://en.wikipedia.org/wiki/Activities_prohibited_on_Shabb...

"Many poskim ground their prohibition of operating electrical appliances in this melakha."

ooh