Thank you for your help. I am still at lost though. I thought if you connect two
objects with a diffrent number of free electrons by a wire -- there will be current
going from a higher to a lower potential point. So will there be a current going
between the two connected terminals of...
lets say i got two batteries; first has 200 electrons on plus terminal and 300 electrons on a negative terminal ( so there is 100 electrons difference in potential energy )
and and second battery has 100 electrons on + terminal and 200 electrons on -.
if connected in series +(200e)...