Four point charges have the same magnitude (but they may
Chapter 19, Problem 19.116(choose chapter or problem)
Four point charges have the same magnitude (but they may have different signs) and are placed at the corners of a square, as the drawing shows. What must be the sign ( or ) of each charge so that both the electric field and the electric potential are zero at the center of the square? Assume that the potential has a zero value at infinity.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer