JEE Main & Advanced Sample Paper JEE Main Sample Paper-11

  • question_answer
    Consider Gauss's law \[\oint{\vec{E}.\overrightarrow{dA}}=\frac{q}{{{\in }_{0}}}.\] Which of the following is true?

    A)  \[\vec{E}\] must be the electric field due to the enclosed charge

    B)  If net charge inside the Gaussian surface = 0, then \[\vec{E}\] must be zero everywhere over the Gaussian surface.

    C)  If the only charge inside the Gaussian surface is an electric dipole, then the integral is zero.

    D)  \[\vec{E}\]is parallel to\[\overrightarrow{dA}\]everywhere over the Gaussian surface.

    Correct Answer: C

    Solution :

     \[\phi =\frac{{{Q}_{net}}}{{{\in }_{0}}}\]For dipole\[{{Q}_{net}}=0\Rightarrow \phi =0\]


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