QJEEM23Phbcf8: JEE Main 2023 Physics - Class 12 JEEM23Phbcf8 Solution: For a charged spherical ball, electrostatic potential inside…

For a charged spherical ball, electrostatic potential inside the ball varies with $$r$$ as $$\mathrm{V}=2a{r}^2+b$$.

Here, $$a$$ and $$b$$ are constant and r is the distance from the center. The volume charge density inside the ball is $$-\lambda a\epsilon$$. The value of $$\lambda$$ is ____________.

$$\epsilon$$ = permittivity of the medium