Electric field lines
- A. can cross one another
- B. start on negative charges and end on positive charges
- C. never cross, because the field has only one direction at each point
- D. are always straight
Explanation
Two crossing lines would mean two different field directions at the same point, which is impossible for a single resultant vector. Lines run from positive to negative charge, and their spacing represents the strength of the field. They are straight only for simple arrangements such as an isolated point charge or a uniform field.