Two point charges q1 = 4.00nC and q2 = ?3.00nC are placed 20.0cm apart as shown in Figure 1. There also exists a third point charge q3 = 2.00nC infinitely far away.
1. Is there a point between q1 and q2 to which I can slide q3 while having the electric field do zero total work?
2. Same question with q3 = ?5nC instead.