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Suraj011 Sharma
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Asked: 2025-02-14T08:12:07+00:00 In:

Four charges + 8Q – 3 Q + 5 Q and – 10 Q are kept inside a closed surface. What will be the outgoing flux through the surface,

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Poll Results

7.89%(a) 26 V - m ( 15 voters )
77.89%(b) 0 V - m ( 148 voters )
10.53%(c) 10 V - m ( 20 voters )
3.68%(d) 8 V - m ( 7 voters )
Based On 190 Votes

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According to Gauss’s Law, the total electric flux (Φ) through a closed surface is given by:
Φ = Qenclosed/ε0
​where Qₑ is the total charge enclosed within the surface.
The total charge enclosed is:
Q enclosed = (+8Q) + (-3Q) + (+5Q) + (-10Q)
Q enclosed = 8Q – 3Q + 5Q – 10Q = 0
​Since the total enclosed charge is zero, the outgoing flux is also zero.
Thus, the correct answer is (b) 0 V·m.
Class 12th Science Physics NCERT MCQ Questions
NCERT Books MCQ Questions Session 2024-2025.

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    1 Answer

    1. According to Gauss’s law, the total electric flux through a closed surface depends on the net charge enclosed. The net charge is (+8Q – 3Q + 5Q – 10Q) = 0. Since the enclosed charge is zero, the outgoing flux is also zero. Answer: (b) 0 V – m.

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