A point charge +q is at the origin. A spherical Gaussian surface centred at the

Question

A point charge +q is at the origin. A spherical Gaussian surface centred at the origin encloses +q. So does a cubical surface centered at the origin and with edges parallel to the axes. Select T-True, F-False, If the first is T and the rest F, enter TFFFF.  

A) Now q is moved from the origin but is sill within both the surfaces. The total flux through both surfaces remains unchanged.
B) The area vector and the E-Field vector point in the same direction for all points on the cubical surface.
C) The flux through the spherical Gaussian Surface is independent of its radius.
D) By symmetry, the E-Field at all points on the cubical surface is zero.
E) The Electric Flux through the spherical surface is lesser than that through the cubical surface.

Explanation / Answer

true answer is A) Now q is moved from the origin but is sill within both the surfaces. The total flux through both surfaces remains unchanged.

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