Charges: positive and negative
same charges repel each other while opposite charges oppose.
charge is quantitized.
Charge by conduction, rubbing metal with flur, free electrons would flow from conductor to flur giving it negative charge while metal possessed excess positive charge.
Charge by induction- conductor: placing a negative charge rod close to a netural conductor sphere, eletrons would be repelled from the side facing the rod to the opposite side, while connecting the sphere to ground, these free repelled eletrons would flow to the ground and once the sphere is dissconnected from it, a positive charged sphere has been induced with minus electrons.
insulator – same method, although there are no free electrons in an insulator, molecules within would be remodeled.
Given that each molecule is a round structure with centered positive charge coincide with centered negative charge, induction by placing a negative charged rod close to would repel the negative charge within a molecule, the molecule would result with an oval shape having electrons tilted away from the rod, resulting a more positive charge on the the inductive side and a more negative side on the other. Assume such a phenomenon started from the left, the induced molecule with a negative ‘tip’ on the left side would be offset by the positive ‘tip’ from another molecule on the right. Such a shifting phenomenon would end up with the insulator having a positive charge on the left and negative charge on the right.
