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Electrostatics question

2019 · 9 Apr · Shift 2 · Q54
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Electrostatics question

2019 · 9 Apr · Shift 2 · Q54

JEE MainPhysicsElectrostaticsMCQ+4 / −1
Four point charges –q, +q, +q and –q are placed on y-axis at y = –2d, y = –d, y = +d and y = +2d, respectively. The magnitude of the electric field E at a point on the x-axis at x = D, with D >> d, will behave as :-
  1. A
    E∝1D3E \propto {1 \over D^3}E∝D31​
  2. B
    E∝1DE \propto {1 \over D}E∝D1​
  3. C
    E∝1D4E \propto {1 \over D^4}E∝D41​
  4. D
    E∝1D2E \propto {1 \over D^2}E∝D21​
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