Four closed surfaces and corresponding charge distributions are shown below. Let the respective electric…

Four closed surfaces and corresponding charge distributions are shown below.



Let the respective electric fluxes through the surfaces be ϕ1, ϕ2, ϕ3 and ϕ4. Then:
  1. ϕ1>ϕ2>ϕ3> ϕ4
  2. ϕ1<ϕ2= ϕ3>ϕ4
  3. ϕ1>ϕ3; ϕ2<ϕ4
  4. ϕ1= ϕ2= ϕ3= ϕ4

Solution

By Gauss law,

 ϕ= qenclosedϵo

qenclosed is same in all cases.

⇒ ϕ will be same in all four cases

Asked in: JEE Main 2017 (09 Apr Online)

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