I imagine them as fast cars on a highway, when the cable is straight that’s not a problem, but when the cable has bends and stuff?
In: Physics
Electrons flowing through a wire are normally really small. Just a few millimeters per second on average.
Also they don’t move on straight pathes (even in a straight piece of wire). They basically constantly bump into atoms, which force them slow down and change directions.
So you dont really have a highway with many cars next to each other, but roads where cars constantly drive over speed bumpers and every time they do so they switch lanes.
The electrons are pretty slow (and change directions anyway on collisions), so that centrifugal forces are not really relevant in normal situations.
You can get some interesting issues with sharp edges at high voltages (like that you get sparks from them), but that is not caused by a flow of electrons (an electrical current), but only by an electric field which gets high enough so that it can go through normally insulating materials like air.
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