1. The problem statement, all variables and given/known data I'm right now trying to solve a question concerning the direction of an electron in an electric field. There is the picture I added given and you know that there is a homogeneous electric field. The blue line represents the movement of an electron (there is no movements up or down) which enters the field in the point A. The question: In which direction points the electric field? 2. Relevant equations It's not about equations. 3. The attempt at a solution I'm aware of rules like the right-hand-rule, but I'm especially confused since there is an electric (and not magnetic) field - I have never before dealt with electric fields. I hope you can help me.