For a closed surface $\oint \vec{E} \cdot d\vec{s} = 0$,then:

  • A
    Electric field at every point on the surface is zero.
  • B
    Electric field at every point on the surface is uniform.
  • C
    Electric field at every point on the surface is parallel.
  • D
    The number of electric field lines entering the surface is equal to the number of electric field lines exiting the surface.

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