53. An electron flies into a flat capacitor with a speed υ0 (υ0 << с) parallel to the plates, the distance between which is d. At what angle will the electron velocity vector deviate from the initial direction when the capacitor leaves, if the capacitor is charged to the potential difference ∆φ? The length of the plates L (L >> d).

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)