Four closed surfaces s1, s2, s3 and s4 together with charges +q,-q and -2 q are shown. Through which one of the surfaces the net flux is zero?

Question

Four closed surfaces s1, s2, s3 and s4 together with charges +q,-q and -2 q are shown. Through which one of the surfaces the net flux is zero? (A) s1 (B) s2 (C) s3 (D) s4

Tardigrade Admin · Accepted Answer

According to given diagram, net charge enclosed through the surface S2 is zero. Hence, according to Gauss's law, Net flux through surface, S2=( text Charge in closed /ε0)=(0/ε0)=0

Q. 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?

$s_{1}$

$s_{2}$

$s_{3}$

$s_{4}$

According to given diagram, net charge enclosed through the surface $S_{2}$ is zero. Hence, according to Gauss's law, Net flux through surface,
$S_{2} = \frac{Charge in closed}{ε _{0}} = \frac{0}{ε _{0}} = 0$

Q. Four closed surfaces s1​,s2​,s3​ and s4​ together with charges +q,−q and −2q are shown. Through which one of the surfaces the net flux is zero?

s1​

s2​

s3​

s4​