Electrical Conduction

Electrons are the charge carriers in metals.Ions are the charge carriers in solutions.Electrons actually flow from the negative to positive terminal but conventional current is from the positive to negative terminal.For current to flow you need:• a complete circuit• charged particles (e.g. electrons).• and a source of potential differenceNo electrons move through insulators because there are no free electrons that can move through the solid lattice.The electrons are attached to the atoms.