Electrostatics 3 Question 9
9. A disc of radius having a uniformly distributed charge is placed in the plane with its centre at . A rod of length carrying a uniformly distributed charge is placed on the -axis from to . Two point charges and are placed at and , respectively. Consider a cubical surface formed by six surfaces . The electric flux through this cubical surface is
(2009)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 9. (a)
Solution:
- Total enclosed charge as already shown is
From Gauss-theorem, net flux,