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Electrostatics question

2019 · 9 Jan · Shift 2 · Q68
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Electrostatics question

2019 · 9 Jan · Shift 2 · Q68

JEE MainPhysicsElectrostaticsMCQ+4 / −1
Two point charges q1 (10μC)\left( {\sqrt {10} \mu C} \right)(10​μC) and q2(−-− 25 μ\muμ C) are placed on the x-axis at x = 1 m and x = 4 m respectively. The electric field (in V/m) at a point y = 3 m on y-axis is, [take 14π∈0{1 \over {4\pi { \in _0}}}4π∈0​1​= 9 ×\times× 109 Nm2C −-− 2]
  1. A
    (63i^−27j^)×102\left( {63\widehat i - 27\widehat j} \right) \times {10^2}(63i−27j​)×102
  2. B
    (−63i^+27j^)×102\left( { - 63\widehat i + 27\widehat j} \right) \times {10^2}(−63i+27j​)×102
  3. C
    (81i^−81j^)×102\left( {81\widehat i - 81\widehat j} \right) \times {10^2}(81i−81j​)×102
  4. D
    (−81i^+81j^)×102\left( { - 81\widehat i + 81\widehat j} \right) \times {10^2}(−81i+81j​)×102
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