A $6\,\mu F$ capacitor is charged from $10\;volts$ to $20\;volts$. Increase in energy will be
$18 \times {10^{ - 4}}\,J$
$9 \times {10^{ - 4}}\,J$
$4.5 \times {10^{ - 4}}\,J$
$9 \times {10^{ - 6}}\,J$
A capacitor of capacitance $C$ is charged to potential difference $V_0$. Now this capacitor is connected to an ideal inductor. When $25\%$ of energy of capacitor is transferred to inductor then at that time what will be potential difference across capacitor
A condenser of capacity $50\,\mu F$ is charged to $10\;volts$. Its energy is equal to
The work done in placing a charge of $8 \times {10^{ - 18}}$ coulomb on a condenser of capacity $100\, micro-farad$ is
If an electron enters into a space between the plates of a parallel plate capacitor at an angle $\alpha $ with the plates and leaves at an angle $\beta $ to the plates, the ratio of its kinetic energy while entering the capacitor to that while leaving will be
A $700\,pF$ capacitor is charged by a $50\,V$ battery. The electrostatic energy stored by it is