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Byju's Answer

Standard XII

Physics

Infinite Line of Charge

Two identical...

Question

Two identical positive charges are placed on the y-axis at y = -a and y = +a. Plot the variation of electric potential along the x-axis.

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Solution

$V_{x} = \frac{k q}{r} + \frac{k q}{r} = \frac{2 k q}{r}$
$∴ V_{x} = \frac{2 k q}{\sqrt{x^{2} + a^{2}}}$

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