# Homework Help: Motion of charged particles in electric and magnetic fields

1. Jul 22, 2015

### LXX

1. The problem statement, all variables and given/known data
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?

2. Relevant equations

3. The attempt at a solution
1) The beam deflects more as the voltage increases(?? but how much more)
2)No effect?

2. Jul 22, 2015

### 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 ?

3. Jul 22, 2015

### Dr. Courtney

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

4. Jul 22, 2015

### LXX

Thank you, I have figured it out

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