Question

Five charges q₁, q₂, q₃, q₄, and q₅ are fixed at their positions as shown in Fig. 1.4. S is a Gaussian surface. The Gauss’s law is given by

∮_{s E.ds=q/}ɛ_o  

Which of the following statements is correct?

(a) E on the LHS of the above equation will have a contribution from q₁, q₅ and q₃ while q on the RHS will have a contribution from q₂ and q₄ only.

(b) E on the LHS of the above equation will have a contribution from all charges while q on the RHS will have a contribution from q₂ and q₄ only.

(c) E on the LHS of the above equation will have a contribution from all charges while q on the RHS will have a contribution from q₁, q₃ and q₅ only.

(d) Both E on the LHS and q on the RHS will have contributions from q₂ and q₄ only.

Answer 1

(b) as q₂ and q₄ are enclosed by the Gaussian Surface.