Question

D1-SCT48: THREE CHARGES IN A LINE- ELECTRIC FIELD Shown are two cases where three charges are placed in a row. Three students are Case A comparing the electric field that exerts a force on the middle charge in the diagrams. Adrianna: "All three charges contribute by the principle of superposition. So the field is going to be greatest in case A since the contributions due to the three charges will be greatest." I- Case B Brandon:I think it's a bogus question. The field at that point is undefined because there is a charge there." "I don't think that's right. The field that exerts a force on the middle charge is the field due to the other two charges because a charge cannot feel it own field. Since those other two charges don't change,L the field acting on the middle charge is the same in both cases." Catalina: With which of these students do you agree? Brandon CatalinaNone of them Explain your reasoning.

Please explain how you came to your answer.

Answer 1