Q. In infinite parallel plane sheet of a metal is charged to charge density σ coulomb per square metre in a medium of dielectric constant$K$. Intensity of electric field near the metallic surface will be
A) $E = \frac{\sigma}{\varepsilon_{0}K}$
B) $E = \frac{K}{{3\varepsilon}_{0}}$
C) $E = \frac{\sigma}{2\varepsilon_{0}K}$
D) $E = \frac{K}{{2\varepsilon}_{0}}$
Explanation
(c) $E = \frac{\sigma}{2\varepsilon} = \ \ \frac{\sigma}{2\varepsilon_{0}K}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.