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

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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:

A

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

B

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

C

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

D

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

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

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