In: Physics
4. A +15 nC point charge is placed on the x axis at x = 1.5 m, and a -20 nC charge is placed on the y axis at y = -2.0m. What is the magnitude of the electric field at the origin?
a) 33.6 N/C b) 64.8 N/C c) 54.4 N/C d) 91.6 N/C e) 74.9 N/C