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Electrostatics question

2009 · Shift 1 · Q45
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Electrostatics question

2009 · Shift 1 · Q45

JEE AdvancedPhysicsElectrostaticsMCQ+3 / −1
A disk of radius a4{a \over 4}4a​ having a uniformly distributed charge 6C is placed in the xy-plane with its centre at (−-− a/2, 0, 0). A rod of length a carrying a uniformly distributed charge 8C is placed on the x-axis from x = a/4 to x = 5a/4. Two points charges −-− 7C and 3C are placed at (a/4, −-− a/4, 0) and (−-− 3a/4, 3a/4, 0), respectively. Consider a cubical surface formed by six surfaces x=±a/2,y=±a/2,z=±a/2x=\pm a/2,y=\pm a/2,z=\pm a/2x=±a/2,y=±a/2,z=±a/2. The electric flux through this cubical surface is IIT-JEE 2009 Paper 1 Offline Physics - Electrostatics Question 21 English
  1. A
    −2cε0{{ - 2c} \over {{\varepsilon _0}}}ε0​−2c​
  2. B
    2cε0{{2c} \over {{\varepsilon _0}}}ε0​2c​
  3. C
    10cε0{{10c} \over {{\varepsilon _0}}}ε0​10c​
  4. D
    12cε0{{12c} \over {{\varepsilon _0}}}ε0​12c​
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