----> Use TURBO MODE (Shift and click on Green flag) -----> Click and drag the dots (charges) to change their positions -----> Use the sliders <q1>, <q2> and <q3> to change the charges q1, q2, q3.
I used the equation V=V1 +V2 +V3 for the electric potential in a field of q1, q2, q3.
