One charge (Q1 = 3.3 x 10–5 C) is located on the x-axis at ... ...

  One charge (Q1 = 3.3 x 10–5 C) is located on the x-axis at (10–3 m, 0 m), and another charge (Q2 = 4.4 x 10–5 C) is located on the y-axis at (0 m, 10–3 m). A charge q = 10–16 C is located at the origin. What is the magnitude of the force on the charge at the origin?
(A) 10–5 N
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 14. Electrodynamics