Q. Two parallel metal plates having charges $+ Q$ and $- Q$ face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will
A) Become zero
B) Increase
C) Decrease
D) Remain same
Explanation
(c) Electric field in vacuum $E_{0} = \frac{\sigma}{\varepsilon_{0}}$
In medium $E = \frac{\sigma}{\varepsilon_{0}K}$
If $K > 1$, then $E < E_{0}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.