In the diagram, A and E represent srnall spherical charges: :11 = -Ei. C located at point A and :12 = 45.0 C located at point B. Point A is Ail cm from Point B and Bill] cm from point C. a. What is the magnitude and direction of the electric field at point C? b. If a 12.5 {I charge is placed at point C, what force would it experience? c. What would the electric potential be at point C? d. If a 12.5 (I charge is placed at point C, what electric potential energy would it have