Answer :

Potential due to a point charge at a distance r is given by:

Therefore, at a point very nearby to A and B, r 0 V


At a very nearby point right to A and a very nearby point left to B, potential will tend to ∞ (maximum possible value) as separation will tend to zero. That means at a point somewhere in the middle of path AB, the potential will acquire its minimum value.

Therefore, while moving from A to B, potential will first decrease and then increase.

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