Two concentric hollow metallic spheres of radii $r_1$ and $r_2$ $(r_1 > r_2)$ contain charges $q_1$ and $q_2$ respectively. The potential at a distance $x$ between $r_1$ and $r_2$ will be

  • A
    $\frac{q_1 + q_2}{4\pi \varepsilon_0 x}$
  • B
    $\frac{q_1}{4\pi \varepsilon_0 r_1} + \frac{q_2}{4\pi \varepsilon_0 r_2}$
  • C
    $\frac{q_1}{4\pi \varepsilon_0 x} + \frac{q_2}{4\pi \varepsilon_0 r_2}$
  • D
    $\frac{q_1}{4\pi \varepsilon_0 r_1} + \frac{q_2}{4\pi \varepsilon_0 x}$

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