A condenser has a capacity $2\,\mu \,F$ and is charged to a voltage of $50\, V$. The energy stored is
$25 \times 10^5$ $Joule$
$25$ $Joule$
$25 \times 10$ $erg$
$25 \times 10^3$ $erg$
A parallel plate capacitor is charged to a certain potential and the charging battery is then disconnected. Now, if the plates of the capacitor are moved apart then:
In which of the following stores maximum energy ?
Intially, switch $S$ is connected to position $1$ for a long time shown in figure. The net amount of heat generated in the circuit after it is shifted to position $2$ is
A condenser of capacity $50\,\mu F$ is charged to $10\;volts$. Its energy is equal to
A capacitor of capacitance $\mathrm{C}$ and potential $\mathrm{V}$ has energy $E$. It is connected to another capacitor of capacitance $2 \mathrm{C}$ and potential $2 \mathrm{~V}$. Then the loss of energy is $\frac{x}{3} E$, where $\mathrm{x}$ is____________.