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NEET Sample Paper NEET Sample Test Paper-40

  • question_answer
    A square surface of side L metre in the plane of the paper is placed in a uniform electric field E (volt/m) acting along the same place at an angle \[\theta \] with the horizontal side of the square as shown in the figure. The electric flux linked to the surface in unit of V-m is

    A) \[E{{L}^{2}}\]

    B) \[E{{L}^{2}}\cos \theta \]

    C) \[E{{L}^{2}}\sin \theta \]

    D)  0

    Correct Answer: D

    Solution :

     Flux of electric Field \[\vec{E}\]through any area \[\overset{\text{o}}{\mathop{\text{A}}}\,\]is defined as \[\phi =E.A\,\cos \theta \]or \[\phi =\vec{E}.\vec{A}=0\]the lines are parallel to the surface.


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