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Electrostatics question

2021 · 27 Jul · Shift 2 · Q57
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Electrostatics question

2021 · 27 Jul · Shift 2 · Q57

JEE MainPhysicsElectrostaticsMCQ+4 / −1
What will be the magnitude of electric field at point O as shown in the figure? Each side of the figure is l and perpendicular to each other? JEE Main 2021 (Online) 27th July Evening Shift Physics - Electrostatics Question 139 English
  1. A
    14πε0ql2{1 \over {4\pi {\varepsilon _0}}}{q \over {{l^2}}}4πε0​1​l2q​
  2. B
    14πε0q(2l2)(22−1){1 \over {4\pi {\varepsilon _0}}}{q \over {(2{l^2})}}\left( {2\sqrt 2 - 1} \right)4πε0​1​(2l2)q​(22​−1)
  3. C
    q4πε0(2l)2{q \over {4\pi {\varepsilon _0}{{(2l)}^2}}}4πε0​(2l)2q​
  4. D
    14πε02q2l2(2){1 \over {4\pi {\varepsilon _0}}}{{2q} \over {2{l^2}}}\left( {\sqrt 2 } \right)4πε0​1​2l22q​(2​)
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