PHYSICS: Determine the direction of the velocity of the electron?

Question

as it leaves the uniform electric field.

Okay, I don't want an answer, obviously, because I haven't provided any of the numbers.

I just need someone to point me in the right direction.

Is determining the direction of the velocity of the electron as it leaves the uniform electric field the same as finding the deflection?

Thanks

Answer 1

Finding the velocity direction is not the same as finding the deflection. In a field, the force on the electron F = Eq, where E is the e-field vector and q is the electron charge. ( By convention, E is directed away from a positive charge.) F (which is also a vector) accelerates the electron. Since the electron has a negative charge, it is accelerated and deflected opposite to E. The electron's final velocity depends not only on this acceleration but also on its initial velocity. You'll find a good explanation in the ref. web page.

Answer 2

Interesting question.

Because an electron is induced in its electrical field, the elctron can only escape from its electrical field if it is able to sneak into/find an area where it is not affected by the electrical field. So, when an electron gets deflected, it either leaves its electrical field by such greater force than the eletric-force or by sneaking into the electical-field free area.

I'm not 100% sure on this!