NEET Physics Question - Magnetic Effects of Current

Assertion (A): The surface integral of magnetic field over any closed surface is always zero.

Reason (R): Magnetic poles are always exists in pairs.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is Gauss's Law for Magnetism \(\oint \vec{B} \cdot d\vec{A} = 0\), which is true.

Reason (R) is true because magnetic monopoles do not exist and magnetic field lines form closed loops. (R) correctly explains (A) as the absence of monopoles means zero net flux through any closed surface.

Rankers Physics

Gauss’s Law for Magnetism & Magnetic Monopoles

Solution:

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