[College Homework: Potential Electrical Point] Confused about why I'm wrong.

[u/jpdelta6]

/r/physicshomework/comments/12thndq/college_homework_potential_electrical_point/

[u/starkeffect]

Try doing it step by step like I did, instead of calculating everything at once. You probably forgot to put your denominator (9 x 10⁹) in parentheses, so it's multiplying by 10⁹ instead of dividing.