If a charged sphere is brought close to a rod as shown in the figure above the pairs of pith balls suspended at the ends of the rod will?

When a charged sphere is brought close to the rod, it will induce a separation of charges in the pith balls at the ends of the rod. If the sphere is positively charged, the pith ball closest to the sphere will become negatively charged, while the one farther away will become positively charged. This results in an attractive force between the sphere and the nearest pith ball, while the two pith balls may also repel each other due to their like charges. Consequently, the pith balls will move towards the charged sphere.