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A system of three charges are placed as shown in the figure.

If  $D > > d,$ the potential energy of the system is best given $b$

  • A$\frac{1}{{4\pi {\varepsilon _0}}}\left[ { - \frac{{{q^2}}}{d} - \frac{{qQd}}{{{D^2}}}} \right]$
  • B$\frac{1}{{4\pi {\varepsilon _0}}}\left[ { - \frac{{{q^2}}}{d} - \frac{{qQd}}{{{2D^2}}}} \right]$
  • C$\frac{1}{{4\pi {\varepsilon _0}}}\left[ { - \frac{{{q^2}}}{d} + \frac{{2qQd}}{{{D^2}}}} \right]$
  • D$\frac{1}{{4\pi {\varepsilon _0}}}\left[ { + \frac{{{q^2}}}{d} - \frac{{qQd}}{{{D^2}}}} \right]$
JEE MAIN 2019, Diffcult
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