Two capacitors $C_1$ and $C_2$ are are charged to $120\, V$ and $200\, V$ respectively. It is found that by connecting them together the potential on each one can be made zero . Then

  • A

    $3C_1 + 5C_2 = 0$

  • B

    $9C_1 = 4C_2$

  • C

    $5C_1 = 3C_2$

  • D

    $3C_1 = 5C_2$

Similar Questions

Two similar tiny balls of mass $m$, each carrying charge $q$ are hung from silk thread of  length $l$ as shown in Fig. These are separated by a distance $x$ and angle $2 \theta \sim 10$. Then for equilibrium :-

Electric charges $q, q, -2\,q$ are placed at the comers of an equilateral triangle $ABC$ of  side $l$. The magnitude of electric dipole moment of the system is

Find the equivalent capacitance across $A$ $\&$ $B$ ........$\mu f$

A parallel plate condenser with plate area $A$ and separation $d$ is filled with two dielectric materials as shown in the figure. The dielectric constants are $K_1$ and $K_2$ respectively. The capacitance will be

A $2\,\mu F$ capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch $S$ is turned to position $2$, is.....$\%$