So I was reading my physics textbook and it said that "Suppose we have two metal spheres, one highly charged and the other electrically neutral." What does it mean by highly charged? Does that mean the sphere are both protons and electrons in it?
It shows the picture above that there are only protons in the charged sphere? Also when you place a nail on top of both spheres, which acts as a conductor, do the free electrons from the nail attract the protons from the charged sphere and move those protons to the neutral sphere? Since again in part B after putting the nail on top of both spheres, the previously neutral sphere is charged but with only positive protons?
If someone can clear up my confusion that would be great.