How does an electric scooter hall effect variable throttle work?

I am curious as to how the throttle works on my electric scooter. Because it broke, so I took it apart to try and fix it. I noticed 3 wires going to it, I’m guessing one positive, one ground, and one signal. But I’m just curious how it regulates the voltage signal. Supposedly it has a “Hall effect” sensor in it. does anyone know how these throttles work? Thank you.

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