Q.
Figure shows the electric field lines around three point charges A, B and C, which region or regions of the figure could the electric field be zero?
From the figure, it is clear that, there cannot be a neutral point between a positive and a negative charge. Neutral point can be only there between two like charges i.e., A and C. As magnitude of charge A is smaller than the magnitude of charge C, therefore, neutral point would lie closer to the charge A.