Two identical positive charges are placed on the y -axis at y = - a and y = + a . The variation of V (potential) along the x -axis is shown by the graph

Question

Two identical positive charges are placed on the y -axis at y = - a and y = + a . The variation of V (potential) along the x -axis is shown by the graph, , , ,

MARKS App · Accepted Answer

The potential at the centre is V 0 = 2 k Q a Potential on the x -axis is given by, V A = 2 k Q a 2 + x 2 At x = ∞ , V ∞ = 0 ∴ The graph will tend to 0 at x = ± ∞ and will be maximum at x = 0

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