WB JEE 2023 | Capacitor Question 3 | Physics

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WB JEE 2023 Physics - Capacitor Question 3 English

The figure shows two identical parallel plate capacitors A and B of capacitances C connected to a battery. The key K is initially closed. The switch is now opened and the free spaces between the plates of the capacitors are filled with a dielectric constant 3. Then which of the following statements is/are true?

A

When the switch is closed, total energy stored in the two capacitors is CV$$^2$$.

B

When the switch is opened, no charge is stored in the capacitor B.

C

When the switch is opened, energy stored in capacitor B is $$\frac{3}{2}$$CV$$^2$$.

D

When the switch is opened, total energy stored in two capacitors is $$\frac{5}{3}$$CV$$^2$$.

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