Question

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. Remain same
• D. Decrease

Answer 1

The correct option is D Decrease

Electric field in vacuum between the charged plates,

$E_0=\frac{\sigma }{{\epsilon }_0}$

In medium the medium of dielectric constant $K$,

$E=\frac{\sigma }{{\epsilon }_{0}K}$

As, $K>1$

$\therefore E<E_0$

Hence, $\left(C\right)$ is the correct answer.