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Discuss some points about Gauss's law....

Discuss some points about Gauss's law.

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(i) The total charge contained in the closed surface is zero, then the net electric flux through a closed surface is zero.
(ii) Gauss.s law is true for any closed surface, no matter what its shape or size.
(iii) The charges may be located anywhere inside the surface.
(iv) In the situation when the surface is so chosen that there are some charges inside and some outside the electric field, whose flux appears on the left side of Equ : `phi = (sumq)/epsilon_(0)` is due to all the charges both inside and outside S. The term q on the right side of Gauss.s law, however, represents only the total charge inside S.
(v) The surface that we choose for the application of Gauss.s law is called the Gaussian surface.
(vi) Gauss.s law is often useful towards a much easier calculation of the electrostatic field when the system has some symmetry,
(vii) Gauss.s law is based on the inverse square dependence on distance.
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