(Solved): Problem \( 1.25 \) points (4 points each part) Three charges are located at fixed positions as indi ...

Problem \( 1.25 \) points (4 points each part) Three charges are located at fixed positions as indicated in Figure 1 a. Find the total electric field in a vector form at the origin (3 points) b. Find the Electric force in a vector form on the charge \( -2 \) mico \( \mathrm{C} \) located at origin ( 4 points) c. Find the electric potential at the origin due to the other two charges (3 point)