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Electrostatics question

2012 · Shift 1 · Q41
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Electrostatics question

2012 · Shift 1 · Q41

JEE AdvancedPhysicsElectrostaticsMultiple correct+4 / −1
A cubical region of side aaa has its center at the origin. It encloses three fixed point charges, −q-q−q at (0,−a/4,0),+3q\left( {0, - a/4,0} \right), + 3q(0,−a/4,0),+3q at (0,0,0)\left( {0,0,0} \right)(0,0,0) and −q-q−q at (0,+a/4,0).\left( {0, + a/4,0} \right).(0,+a/4,0). Choose the correct option(s) IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 53 English
  1. A
    The net electric flux crossing the plane x=+a/2x=+a/2x=+a/2 is equal to the net electric flux crossing the plane x=−a/2x=-a/2x=−a/2
  2. B
    The net electric flux crossing the plane y=+a/2y=+a/2y=+a/2 is more than the net electric flux crossing the plane y=−a/2.y=-a/2.y=−a/2.
  3. C
    The net electric flux crossing the entire region is qε0{q \over {{\varepsilon _0}}}ε0​q​
  4. D
    The net electric flux crossing the plane z=+a/2z = + a/2z=+a/2 is equal to the net electric flux crossing the plane x=+a/2.x=+a/2.x=+a/2.
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