Why do nuclear protons have an opposite electronic charge to electrons?
Answers
to attract each other........
I think I helped you
Once you adopt the convention that the charge on the glass is “positive” and that on the leather is “negative” (or vice versa, it was really a toss-up), everything else follows, because you experimentally determine which other charged substances are attracted to (or repelled by) the ones you’ve named. This continued, down through the years, to the discovery of the electron which — had to be “negative” — because it was attracted to the electrode we’d been calling “positive” for over a century by that point.
Life would have been a bit simpler if Franklin had picked the opposite convention and saved physicists and electrical engineers from always having to remember that the electrons are traveling in the opposite direction of the “current.”
O well, into each life some rain must fall. :-)