Question

A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance from its centre

• A. Increases as r increases for r < R
• B. Decreases as r increases for $0<r<\infty$
• C. Decreases as r increases for $R<r<\infty$
• D. Is discontinuous at r = R

Answer 1

Answer: (A), (C)

The correct options are
A Increases as r increases for r < R
C Decreases as r increases for $R<r<\infty$

For non-conducting solid sphere $E_{in}\infty r$
and $E_{out}\infty \frac{1}{r^2}$
i.e. for r <R; E increases as r increases
and for $R<r<\infty$; E decreases as r increases