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?