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प्रश्न
What is the total flux through the two flat faces of area \[A\] for the pillbox around an infinite plane sheet?
पर्याय
\[EA\]
\[E \cdot (4\pi r^2)\]
\[2EA\]
\[E \cdot (2\pi r l)\]
MCQ
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उत्तर
Each of the two flat faces contributes flux \[EA\]. Adding the two contributions gives a total flux of \[2EA\].
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