question_answer

A solid sphere of radius R has a charge Q uniformly distributed throughout its volume. For distances\[r<R\]from the centre of the sphere, the electric field strength varies with distance as:

A)  \[1/{{r}^{3}}\]                  

B)         \[1/{{r}^{2}}\]  

C)         \[1/r\]                 

D)         \[r\]

E) \[r{}^\circ ,\]i.e., it is constant