Two concentric hollow spherical conductors of radii $R$ and $2R$ have charges $Q$ and $-Q$ respectively. Find the electric potential at a distance of $\frac{3R}{2}$ from the centre. $\left[K=\frac{1}{4\pi\varepsilon_0}\right]$

  • A
    $\frac{KQ}{6R}$
  • B
    $\frac{KQ}{3R}$
  • C
    $-\frac{KQ}{2R}$
  • D
    zero

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