What Electricity is and Where it Comes From
Electricity is a fundamental force in nature. It is all around us. We are virtually bathing in it at all times in the form of radio and television signals, microwave energy, radar, etcetera. Furthermore, our bodies run on electrical impulses; messages sent from our brains, through the nerves to the muscles causing contractions, both voluntary and involuntary.
Electricity is an electron in motion, and electrons are the negatively charged particles, which orbit the nucleus of an atom. In order to understand electricity, it is best to visualize it in some way. Think of the moon orbiting around the earth. The earth is analogous to the nucleus of an atom, and the moon is analogous to the electron. The whole system of the earth and the moon is then analogous to the simplest atom in nature, the hydrogen atom.