Question

A charge $Q$ is distributed uniformly in a sphere (solid). Then, the electric field at any point $r$, where, $r < R(r$ is the radius of sphere) varies as:

• A. $r^{1/2}$
• B. $r^{-1}$
• C. $r$
• D. $r^{-2}$

Answer 1

Answer: (C)

$r$

Answer 2

Electric field intensity at a point inside the sphere
$E=\frac{Q}{4 \pi \varepsilon_{0} R} r$
$\therefore E \propto r$