Graphical representation of potential, Physics

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When we move from a positive charge towards an equal negative charge along the line joining the two then initially potential reduces in magnitude and at centre changes into zero, but this potential is throughout positive because when we are nearer to positive charge, whole potential remain always negative but increases in value fig. (A). As one step from one charge to other when both charged particle are behave, the potential first reduces, at centre convert into minimum and then enhances Fig. (B)

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