JEE Main 2017 — Electrostatics Question with Solution
From: JEE Main 2017 (Online) 9th April Morning Slot
Question
Four closed surfaces and corresponding charge distributions are shown below.
Let the respective electric fluxes through the surfaces be and . Then :
Let the respective electric fluxes through the surfaces be and . Then :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: C
Correct answer
C = = =
Step-by-step explanation
Net flux through a closed surface,
=
qenclosed = charge enclosed by closed surface.
For surface S1,
1 = (2q)
For surface S2,
2 = (q + q + q q) = (2q)
For Surface S3,
3 = (q + q) = (2q)
For surface S4,
4 = (8q 2q 4q) = (2q)
1 = 2 = 3 = 4
=
qenclosed = charge enclosed by closed surface.
For surface S1,
1 = (2q)
For surface S2,
2 = (q + q + q q) = (2q)
For Surface S3,
3 = (q + q) = (2q)
For surface S4,
4 = (8q 2q 4q) = (2q)
1 = 2 = 3 = 4
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