1.

A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric filed due to the sphere at a distance r from its centreA. increases as r increases, for rltRB. decreases as r increases, for `0 ltrltoo`C. decreases as r increases, for `Rltrltoo`D. is discontinuous at `r = R`.

Answer» The expressions of the electrical field are
inside the sphere `(rltR),E=(1)/(4piepsi_(0))(Q)/(R^(3))r`
Outside the sphere `(R lt r lt infty),E=(1)/(4piepsi_(0))(Q)/(r^(2))`
Hence, E increases for `rltR` and decreases for `Eltrltinfty`.


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