Motion of charged particles in electric and magnetic fields

[LXX]

Homework Statement

1) Describe and explain what happens to the electron beam on the screen of a teltron tube as the EHT(electrical high tension) voltage increases from 3000V to 3500V.
2)What is the effect of E field on light waves?

Homework Equations

The Attempt at a Solution

1) The beam deflects more as the voltage increases(?? but how much more)
2)No effect?

 

[BvU]

1) What is the direction of the EHT potential difference wrt the direction of the electron beam ? (In other words: what's the function of this EHT ?)

2) Because ?

 

[Dr. Courtney]

You need to consider what the equations of motion are and write these down.

 

[LXX]

Thank you, I have figured it out