12. [-/4 Points] DETAILS SERPSE10 22.4.P.019. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Three point charges are located on a circular arc as shown in the figure below. (Take r = 3.68 cm. Let to the right be the +x direction and up along the screen be the +y direction.) +3.00 nC -2.00 nC 30.0 30.0 +3.00 nC (a) What is the total electric field at P, the center of the arc? E = i N/C + j N/C (b) Find the electric force that would be exerted on a -5.42-nC point charge placed at P. F = iN + i N Need Help? Read It