ElectrostaticsHard
Question
A disk of radius a/4 having a uniformly distributed charge 6C is placed in the x-y 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 point 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/2. The electric flux through this cubical surface is
Options
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Solution
Total charge enclosed by cube is -2C. Hence electric flux through the cube is 
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