AIPMT PRELIMS2012Physics-Electrostatics
AIPMT PRELIMS 2012 Physics Gauss's Law MCQ Question
Type: MCQ-conceptual-Medium-Class 12
What is the flux through a cube of side ‘a’ if a point charge of q is at one of its corner?
A
q / 2ε₀ 6a²
B
2q / ε₀
C
q / 8ε₀
D
q / ε₀
Correct Answer
Option C
Detailed Explanation
According to Gauss's theorem, the flux through a closed surface is q/ε₀. Since the charge is at the corner, it is shared by 8 cubes, so the flux through one cube is q/8ε₀.
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