Question
Download Solution PDFWhich of the following option gives correct equation for Gauss' Law of magnetism?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Gauss's law for magnetism is one of the four of Maxwell's equations.
- It states that the magnetic field B has divergence equal to zero.
The integral form of Gauss's law for magnetism states:
\(\oint \overrightarrow{B}.\overrightarrow{dA}=0\)
where B is the magnetic field and dA is any closed surface vector whose magnitude is the area of an infinitesimal piece of the surface, and whose direction is the outward-pointing surface normal.
- Gauss's law for magnetism states that magnetic flux through a closed surface is always zero.
EXPLANATION:
Magnetic flux through a closed surface is given by:
\(\phi = \oint \overrightarrow{B}.\overrightarrow{dA}\)
and Gauss's law for magnetism states that magnetic flux through a closed surface is always zero.
\(\oint \overrightarrow{B}.\overrightarrow{dA}=0\)
So the correct answer is option 3.
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