> high current, low voltage is where speed of electrons is moving very fast with little amount of force.
> high voltage, low current is where alot of force is being applied but no electrons are moving very fast.
Unfortunately, this is not quite correct. Voltage is the difference between two potentials. When an electron is accelerated through a potential difference, from say a battery, the increase in the electron's kinetic energy is directly proportional to that potential. That is, larger voltages result in faster-moving electrons. This principle is used in particle accelerators, X-Ray devices, even your computer CRT.
For example, a 7eV electron (that is, an electron that has been accelerated from 0 through a 7 volt potential) has a speed of a little less than 1/2 of 1% the speed of light...about 3.5 million miles/hour.
But this isn't the whole story. When electrons pass through a conductor, say copper wire, they don't pass freely. They bounce around scattering off the copper atoms. At room temperature, the so-called "mean free path" of copper is on the order of 150 times the size of a copper atom. This is the average distance a conduction electron in the copper will travel before scattering off a copper atom -- bouncing off in a different direction. Given the aforementioned electron speed, you can imagine not much time passes between collisions. There are a boatload of collisions each second.
Now, if the ends of the wire aren't connected to a battery, there is no potential difference and thus these conduction electrons are bouncing around in random directions within the wire. The net result is no current flows which is what we'd expect. If you were to discover electrons "pouring" from the end of a wire without the presence of a potential difference, you'd become a wealthy person 🙂
Now, attach ends of the wire to a battery. Now there's a potential difference (and thus, an electric field) in place and this will affect the overall direction of these bounces. Instead of scattering off in random directions, the electric field will cause the conduction electrons to experience a force, attracting them to one end of the wire. So while they're still bouncing into copper atoms, if you were to track the horizontal position of a single conduction electron, you'd see it very slowly make its way to one end of the wire. This gives rise to the electron "drift speed." In a typical copper wire with a 1amp current, the drift speed might be as little as a dozen cm/hour. The reason you see lights come on almost immediately when you flip the switch is that the wire is full of conduction electrons distributed uniformly throughout and an applied electric field travels roughly at the speed of light. A rough analogy would be like when you turn on a garden hose...if the hose doesn't contain any water, you'll have to wait a few seconds for water to start pouring out the end; if the hose is already full, you see water come out almost immediately.
So, while the drift speed of electrons in the "high current, low voltage" scenario is higher than those of the "high voltage, low current" scenario, the individual high voltage electrons are moving faster than the low voltage electrons. And in neither case would you consider the drift velocity to be "very fast": a 100amp current in a 16gauge wire would yield a drift speed of around 10 meters/hour while a 1amp current in the same wire yields a drift speed of around 10 cm/hour.
