>>10826770A voltage source has 2 poles. Positive pole, negative pole.
At the positive pole there are atoms with lack of electrons.
At the negative pole there are atoms with excess electrons.
When we connect the two poles with copper wire (copper atoms), then
at the positive pole electrons from the copper atoms will move to the atoms toward the positive pole.
When an electron moves from one atom to an other atom,
then there will be lack of electrons in that atom where it was moved from.
There will be a hole in that atom.
Now an other electron can come fill that hole from a surrounding atom.
When we want to know the exact location of an electron at the moment (which is impossible) then we use the probability distributions.
