Figure shows three circular arcs, each of radius $R$ and total charge as indicated. The net electric potential at the centre of curvature is

816-385

  • A

    $\frac{Q}{{4\pi { \in _0}R}}$

  • B

    $\frac{Q}{{2\pi { \in _0}R}}$

  • C

    $\frac{2Q}{{\pi { \in _0}R}}$

  • D

    $\frac{Q}{{\pi { \in _0}R}}$

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