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Electrostatics question

2002 · Q171
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Electrostatics question

2002 · Q171

NEETPhysicsElectrostaticsMCQ+4 / −1
Identical charges (−-−q) are placed at each corners of cube of side b then electrostatic potential energy of charge (+q) which is placed at centre of cube will be
  1. A
    −42q2πε0b{{ - 4\sqrt 2 {q^2}} \over {\pi {\varepsilon _0}b}}πε0​b−42​q2​
  2. B
    −82q2πε0b{{ - 8\sqrt 2 {q^2}} \over {\pi {\varepsilon _0}b}}πε0​b−82​q2​
  3. C
    −4 q23 πε0b{{ - 4\,{q^2}} \over {\sqrt 3 \,\pi {\varepsilon _0}b}}3​πε0​b−4q2​
  4. D
    82 q24 πε0b{{8\sqrt 2 \,{q^2}} \over {4\,\pi {\varepsilon _0}b}}4πε0​b82​q2​
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