What is electricity? Let me use the example of turning on a light in a room. I have been told that when I flip the switch, electrons flow in the wire at near the speed of light, and that is electricity. I have also been told that electricity propagates as a field between the two wires, and the energy is in that field. Further, I have heard of some phenomenon -- called drift current perhaps -- where there is a net accumulation or depletion of electrons in a wire over a period of a few seconds. Or, some propagation effect whereby electrons move only a few centimeters per second. Is there anything like this? Thank you for considering my question.