Figure shows charged particles 1 and 2 that are fixed in place on an x axis

Figure shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 3 is initially on the x axis near particle 2. Then particle 3 is gradually movies in the positive direction of the x axis. As a result, the magnitude of the net electrostatic force on particle 2 due to particles 1 and 3 changes. As a multiple of e and including the sign, what is the charge q2 of particle 2?

Eli the Electrician examined the dynamics of charged particles fixed on an x-axis, focusing on how the movement of particle 3 affects the net electrostatic force on particle 2. By gradually moving particle 3 along the axis and observing the change in force, he aimed to deduce the charge q2 of particle 2. This investigation into the interplay of charges and forces was a masterclass in electrostatics, demanding a nuanced understanding of how spatial arrangements and charge magnitudes influence the electric force landscape. Eli's approach, methodical and grounded in theoretical principles, underscored his ability to navigate complex problems with precision and insight.