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a)State Gauss’s law in electrostatics. S...

a)State Gauss’s law in electrostatics. Show that with help of suitable figure that outward flux due to a point charge Q, in vacuum within gaussian surface, is independent of its size and shape.
b) In the figure there are three infinite long thin sheets having surface charge density `+2sigma, -2sigma and +sigma` respectively. Give the magnitude and direction of electric field at a point to the left of sheet of charge density `+2sigma` and to the right of sheet of charge density `+sigma`

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(a) Statement of Gauss law
Proof of outward flux due to a point charge Q ,in vacuum within gaussian surface, is independent of its size and shape
(b) Net electric field towards left=`sigma//epsi` left
Net electric field towards right =`sigma//epsi` right
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