A parallel plate capacitor of capacitance $C$ is connected to a battery and is charged to a potential difference $V$ . Another capacitor of capacitance $2C$ is similarly charged to a potential difference $2V$ . The charging battery is now disconnected and the capacitors are connect in parallel to each other in such a way that the positive terminal of one is connected to the negative terminal of the other. The final energy of  the configuration is

  • A

    zero

  • B

    $\frac{3}{2}\,C{V^2}$

  • C

    $\frac{25}{6}\,C{V^2}$

  • D

    $\frac{9}{2}\,C{V^2}$

Similar Questions

The electric potential $(V)$ as a function of distance $(x)$ [in meters] is given by $V = (5x^2 + 10 x -9)\, Volt$. The value of electric field at $x = 1\, m$ would be......$Volt/m$

In the circuit shown in the figure, the potential difference across the $4.5\,\,\mu F$ capacitor is.......$volts$

                                

In the figure a potential of $+ 1200\, V$ is given to point $A$ and point $B$ is earthed, what is the potential at the point $P$....$V$

In a hollow spherical shell, potential $(V)$ changes with respect to distance $(s)$ from centre as

Three identical dipoles are arranged as shown below. What will be the net electric field at $M$