Question:
This question has Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.
An insulating solid sphere of radius $\mathrm{R}$ has a uniformaly positive charge density $\rho$. As a result of this uniform charge distribution there is a finite value of electric potential at the centre of the sphere, at the surface of the sphre and also at a point out side the sphere. The electric potential at infinity is zero.
Statement-1: When a charge ' $q$ ' is taken from the centre to the surface of the sphere, its potential energy changes by $\frac{\mathrm{q} \rho}{3 \epsilon_{0}}$
Statement-2 : The electric field at a distance $r(r
Correct Option: , 4
Solution:
