Module 2 : Electrostatics
Lecture 7 : GAUSS'S LAW

Example 7 :

Find the electric field inside a sphere of radius $R$ which carries a charge density $\rho = kr$where $r$is the distance from the origin and $k$is a constant.

Solution :


By symmetry the field is radial. Take the gaussian surface to be a sphere of radius $R$. The flus is $4\pi r^2\mid E\mid$

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