E=F/q

\vec{F}

\vec{E}=\frac{\vec{F}}{q}

q (+)

q (-)

q_1 (+)

q_1 (-)

q_1 = (-6, 2)
q1 = 1.3000000000000004E-8 (slider from (-50 * 10^(-9)) to (50 * 10^(-9)), step (0.01 * 10^(-9)))
K: (9 * 10^(9))
q = -1 (slider from -5 to 5, step 0.2)
q_{prova} = (1.2385025404264225, 3.869080242015792)
r_1 = Vector(q_1, q_{prova})
u_1: r_1 / abs(r_1)
f_1: (((u_1 * K) * q) * q1 / (abs(r_1))^(2))
f: f_1
A = Translate(q_{prova}, f_1)
F_1 = Vector(q_{prova}, A)
E_{1} = Translate(q_{prova}, f)
F = Vector(q_{prova}, E_{1})
ee: f / q
G = Translate(q_{prova}, ee)
E = Vector(q_{prova}, G)