A parallel plate capacitor.... | JEE Main 2026

JEE MAIN 2026

21-01-2026 S1

Question

A parallel plate capacitor has capacitance $C$, when there is vacuum within the parallel plates. A sheet having thickness $\left(\frac{1}{3}\right)^{\text {rd }}$ of the separation between the plates and relative permittivity $K$ is introduced between the plates. The new capacitance of the system is :

Select the correct option:

$\frac{3 K C}{2 K+1}$

$\frac{C K}{2+K}$

$\frac{3 C K^2}{(2 K+1)^2}$

$\frac{4 K C}{3 K-1}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution