The workings of the Hall effect? I want to ask about the workings of the Hall effect. Why do the electrons come to rest on the edge of the wire? The magnetic field pushes them up, and the electric field pushes them forward. Shouldn't they reach the top of of the conductor and then stop moving up but continue moving forward?
Why does the magnetic field stop them from continuing to flow? The magnetic force is up so why would it effect their velocity forwards?
 A: I think you are confused about what the Hall effect does. You ask: "Why does the magnetic field stop them from continuing to flow?" The answer is: it doesn't. Take this setup:

Here, the magnetic field is pointing up, in the +z direction. The conventional current in the purple conductor is flowing towards us (electrons going in the opposite direction). This current is unaffected by the magnetic field. That is, the current is in the +x direction, magnetic field or no.
However, the electrons experience a force orthogonal to this, in the -y direction. This is a consequence of the Lorentz force:
$$ {\mathbf {F}}=q\left({\mathbf {E}}+{\mathbf {v}}\times {\mathbf {B}}\right) $$
In particular, the ${\mathbf {v}}\times {\mathbf {B}}$ term. This doesn't stop the current or change it. Initially, electrons will be pushed to the left, but very soon the system will reach equilibrium, and the "electron gas" will be denser at the left so as to  cancel the force they experience due to the magnetic field $\mathbf B$. Then, the net force experienced by the electrons is in line with the conductor, just as it would have been in the absence of a magnetic field. The result of this charge redistribution, the electrons being more dense at once side, is a measurable voltage, $V_H$, between the sides of the conductor.
