AP EAMCET · PHYSICS · Electrostatics
Four closed surfaces \(S_1, S_2, S_3\) and \(S_4\) together with charges \(+q,-q\) and \(-2 q\) are shown. Through which one of the surfaces the net flux is zero?
- A \(S_1\)
- B \(S_2\)
- C \(S_3\)
- D \(S_4\)
Answer & Solution
Correct Answer
(B) \(S_2\)
Step-by-step Solution
Detailed explanation
According to given diagram, net charge enclosed through the surface \(S_2\) is zero. Hence, according to Gauss's law, Net flux through surface, \(\begin{aligned} S_2 & =\frac{\text { Charge inclosed }}{\varepsilon_0} \\ & =\frac{0}{\varepsilon_0}=0 \end{aligned}\)
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