Since nobody knows the correct answer, it must be several thousand miles per hour.
1.2 mph
I would call it current speed, not average speed.
velocity
It depends on the time of year and where in Africa.
The speed of the Mississippi River varies depending on the location at which it is measured. At the headwaters, the flow is about 1.2 miles per hour. In New Orleans, far downriver from the headwaters, the river flows at about 3 miles per hour. For comparison, most people walk at about 3 to 3.5 miles per hour.
This will depend not only upon the strength of the current (in Amperes), but also on the wire's cross-section. In any case, in a typical current, the electrons have an average speed of a tiny fraction of a milliter per second.
The speed of the flow changes depending on season, rainfall, width, depth, gradient and where in the river you measure it. However the total outflow averages approximately 209,000 m3/s (7,381,000 cu ft/s).
There are three different speeds here.The average speed of electrons - whether there is a current or not - is a significant fraction of the speed of light. That speed depends on the temperature. (The average VELOCITY of course is zero if there is no current, since as many electrons will go in one direction as in another.) The drift velocity (the average velocity) of the electrons is a small fraction of a millimeter per second. The exact value depends on the current, the cross section, and the material. The speed at which a signal can propagate in copper is about 2/3 of the speed of light in a vacuum - so, about 200,000 km/second. It is this speed that makes your light react quickly when you activate a switch.
The speed of an electric current is determined according to v = I/nAQ (average speed equals current divided by the number of charged particles moving, the cross-sectional area of the conductor and the charge of the particles). This basically means that a normal current e.g. the current in a house's wiring travels at about walking pace.
The maximum current of the pole changing motor when running at low speed and high speed depends on a few different things. The average when begin at low speed and using high speed is 1800 RPM points.
Current jet fighters average about 1,300 mph.
Electricity and water are often compared to help explain how electricity works. Voltage is like the speed of water in a river, and electrical current is like the amount of water in the river. Resistance can be compared to the physical width of the river. Power is voltage times current, or the speed of the water times the amount of water. Electricity is usually most dangerous when it is available at high power - similar to a huge, fast moving river.