A parallel plate capacitor | Physics | JEE ADVANCED 2014

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Question

A parallel plate capacitor has a dielectric slab of dielectric constant $K$ between its plates that covers $1 / 3$ of the area of its plates, as shown in the figure. The total capacitance of the capacitor is C while that of the portion with dielectric in between is $\mathrm{C}_1$. When the capacitor is charged, the plate area covered by the dielectric gets charge $Q_1$ and the rest of the area gets charge $Q_2$. Choose the correct option/options, igonoring edge effects.

Select ALL correct options:

A

$\frac{E_1}{E_2}=1$

B

$\frac{E_1}{E_2}=\frac{1}{K}$

C

$\frac{Q_1}{Q_2}=\frac{3}{K}$

D

$\frac{\mathrm{C}}{\mathrm{C}_1}=\frac{2+\mathrm{K}}{\mathrm{K}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

⚠ Partially correct. Some answers are missing.

Solution

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