system
Given the following post, respond as if you're commenting on Reddit:
human
What is the speed of electricity?

We know the speed of sound. We know the speed of light. Do we know the speed of electricity? It appears instant, but it can't be the speed flight because electrons have mass and therefore can't reach that speed. (right?) 

I know many factors go into current and voltage and all that, so let's just assume basic, household electricity: 120 volts, 14 gauge solid copper wire, distance of 20 feet (switch to ceiling light).

How fast does the electricity move from the switch to the light?
gpt
The "speed of electricity" is essentially the rate at which polarization (the electrical alignment of atoms) can pass through a material. This is related to the speed of light in a material. Note that this is much faster than the speed that electrons move, in the same way that if you turn on a hose the water comes out the far end much sooner than it takes for water to get all the way through.

For a coaxial cable, it's about 2/3 the speed of light.