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Electrostatics question

2019 · 9 Apr · Shift 1 · Q65
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Electrostatics question

2019 · 9 Apr · Shift 1 · Q65

JEE MainPhysicsElectrostaticsMCQ+4 / −1
A system of three charges are placed as shown in the figure : JEE Main 2019 (Online) 9th April Morning Slot Physics - Electrostatics Question 190 English If D >> d, the potential energy of the system is best given by :
  1. A
    14πε0[q2d+qQdD2]{1 \over {4\pi {\varepsilon _0}}}\left[ { {{{q^2}} \over d} + {{qQd} \over {{D^2}}}} \right]4πε0​1​[dq2​+D2qQd​]
  2. B
    14πε0[−q2d−qQd2D2]{1 \over {4\pi {\varepsilon _0}}}\left[ { - {{{q^2}} \over d} - {{qQd} \over {2{D^2}}}} \right]4πε0​1​[−dq2​−2D2qQd​]
  3. C
    14πε0[−q2d−qQdD2]{1 \over {4\pi {\varepsilon _0}}}\left[ { - {{{q^2}} \over d} - {{qQd} \over {{D^2}}}} \right]4πε0​1​[−dq2​−D2qQd​]
  4. D
    14πε0[−q2d+2qQdD2]{1 \over {4\pi {\varepsilon _0}}}\left[ { - {{{q^2}} \over d} + {2{qQd} \over {{D^2}}}} \right]4πε0​1​[−dq2​+D22qQd​]
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