this post was submitted on 15 Aug 2023
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Because the electrons are bound to the atomic nuclei of the material they are present within. The electrostatic force is much stronger than gravity. This allows materials to exist in the first place, since electrons are the glue between atoms in molecules.
Cables are made of metals since electrons in metals move as if they are part of an electron gas surrounding the nuclei and are therefore free to move around with low resistance.
Electricity isn't comprised of atoms or ions, but only electrons. How can there be a nucleus if there are no neutrons and protons to make it?
Electricity is composed of moving electrons. Electrons are never really found in a free state, unless part of a plasma. The electrons must move through some medium.
Materials consist of atoms lumped together. Atoms consists of nuclei, e.g. protons and neutrons, surrounded by electrons. Materials can form when electronic charge can be shared between atoms. Not all electrons will be shared though, only those that are farthest away from the nucleus will be contenders for this and these electrons will be the ones responsible for measurable currents.