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Physics · JEE | Electric Charges and Fields
हिन्दीHow many of the following statements are correct? (I) The Gaussian surface can pass through any discrete charge location safely without any singularity issue. (II) The total charge enclosed by a Gaussian surface for a neutral atom model with a uniform negative charge cloud and point nucleus is zero when \( r > R \). (III) Electrostatic field lines can form closed loops in static charge configurations. (IV) The surface area of the curved part of a cylindrical Gaussian surface of radius \( r \) and length \( l \) is \( 2\pi rl \).
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Correct answer · Option C
Only three
Explanation
Statements (II) and (IV) are correct. Statement (I) is false because Gaussian surfaces cannot pass through discrete charges. Statement (III) is false because electrostatic field lines never form closed loops.
