If a charged spherical conductor of radius $10\,cm$ has potential $V$ at a point distant $5\,cm$ from its centre, then the potential at a point distant $15\,cm$ from the centre will be

  • A

    $\frac{1}{3}\,V$

  • B

    $\frac{2}{3}\,V$

  • C

    $\frac{3}{2}\,V$

  • D

    $3\,V$

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