1.

Five charges q_1 q_2, q_3, q_4, and q_5 are fixed at their positions as shown in figure. S is a Gaussian surface. The Gauss's law is given by int_(S)vecE.vec(ds) = q/epsilon_(0). Which of the following statements is correct?

Answer»

`vecE` on the LHS of the above equation will have a contribution from `q_(1),q_(5)`and `q_3` while q on the RHS will have a contribution from `q_2` and `q_4` only.
`vecE`on the LHS of the above equation will have a contribution from all CHARGES while q on the RHS will have a contribution from `q_2` and `q_4` only.
`vecE` on the LHS of the above equation will have a contribution from all charges while q on the RHS will have a contribution from `q_1 ,q_3` and `q_5` only.
Both `vecE` on the LHS and q on the RHS will have contributions from `q_2` and `q_4` only.

Solution :n equation, `vecE` is electric field on closed surface by charges inside or outside it.
But, `q_1` is the charge enclosed by the closed surface, the charges outside the surface are not taken into CONSIDERATION.


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