Hi. I'm a student in AP Physics this year and we started the E&M portion this week and we learned about electric fields. I was watching MIT's OpenCourseWare in order to get more comfortable with the concepts. The lecturer said that charges do not follow electric field lines because of the forces on the charge could cause it to move onto a different field line, but I thought the forces are what caused the field lines to be shapped in the manner they are. So I'm curious if I was either misunderstanding the lecturer or my idea was wrong, and if so why are the field lines "curved" like a trajectory.