Q. Consider a thin spherical shell of radius $R$ consisting of uniform surface charge density $\sigma.$ The electric field at a point of distance $x$ from its centre and outside the shell is
A) Inversely proportional to $\sigma$
B) Directly proportional to $x^{2}$
C) Directly proportional to $R$
D) Inversely proportional to $x^{2}$
Explanation
(d) $E_{out} = \frac{\sigma R^{2}}{\varepsilon_{0}x^{2}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.