On my physics test yesterday, one of the questions was the following: At a particular point in space, a charge Q experiences no force. It follows that A. if charges are nearby, the total positive charge must equal the total negative charge. B. there is not enough information to tell whether there are nearby charges or not. C. if charges are nearby, they have the opposite sign of Q D. there are no charges nearby E. if charges are nearby, their total charge must add up to zero. I answered D, but according to the test key, the correct answer was B. I had initially put B, but when I realized that the problem said "no force" instead of "no net force," it was clear that D was the correct answer. Do I have a case? I'm guessing that the teacher meant it to read "no net force," but the distinction is a very important one for this question.