Electric potential or potential difference expressed in volts. The voltage between your head and your toes when you walk around is two or three hundred volts, and nobody notices that. A flow of electric charge. When electric current flows, electrons are torn from atoms and move freely. A material or object that permits an electric current to flow easily.
Copper has a lot of loosely held electrons so it s a good conductor.
The electrons of clay and rubber are too tightly bound to their atoms to conduct electricity. They re said to be insulators. A fundamental physical force that is responsible for interactions between charged particles that occur because of their charge. How electrons begin to move in the first place is a result of a force of nature called electromagnetism. The portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.