1. The force, F, on a charge, q, located in an electric field, E, is given by
F = q*E
In component form for
F_x = q * E_x
F_y = q * E_y
F = abs(q) * E (magnitudes)
2. The net electric field, Enet, due to several sources is the vector sum of the electric field due to each source.
Enet = E1 + E2 + E3 + …
In component form for Andes
Enet_x = E1_x + E2_x + E3_x + …
Enet_y = E1_y + E2_y + E3_y + …