Question

Is it assumed that an electron has a negative charge.
Why does it have a negative charge

Answer 1

Directly from Wikipedia:
"A possible explanation lies in the formation of virtual photons in the electric field generated by the electron. The continual creation and absorption of these photons causes the electron to move about in a jittery fashion. As photons possess angular momentum, this jittering of the electron causes a net precession, which, on average, results in a circulatory motion of the mass and charge."

hope this helps :)

Answer 2

No that didn't help , because asked something different. but i appreciate your help

Answer 3

I*

Answer 4

it's a historical convention, it dates back to when people were experimenting with static electricity using glass rods, silk, wool, etc. They noticed that there were only 2 ways in which these objects behaved when they were rubbed with one another. I think they referred to them as one gaining something (positive) and one losing something (negative).

Answer 5

Yes , that's what I was thinking of because to me it is technically impossible to know if it is positive or negative

Answer 6

yeah it's just the way they differentiated them. There is no "negative" and "positive", they're just labels.