1. The problem statement, all variables and given/known data A small object A, electrically charged, creates an electric field. At a point P located 0.250m directly north of A, the field has a value of 40.0N/C directed to the south. A) 1.11×10^−9C B) −1.11×10^−9C C) 2.78×10^−10C D) −2.78×10^−10C E) 5.75×10^12C F) −5.75×10^12C What is the charge of object A? 2. Relevant equations E = (KQ)/r^2 3. The attempt at a solution After manipulating the above equation, I found out that the charge Q = (E*r^2)/K Q = (E*r^2)/K = (40*(0.25^2))/9×10^9 = 2.78×10^−10C makes sense to me, but should it be negative or positive?