Calculate the equivalent capacitance between the points $\mathrm{A}$and $\mathrm{B}$ In the given circuit. If $100 \mathrm{V} \mathrm{PD}$ Is established between $\mathrm{A}$and $\mathrm{B}$Then what will be the charge on the capacitor closest to?

Find the equivalent capacitance between the points $\mathrm{A}$ and $\mathrm{B}$In the given circuit. 

Four capacitors of equal capacitances are joined in series with a battery of $10 \mathrm{V} .$ The middle point $\mathrm{B}$ Is connected to the earth. What will be the potentials of the points $\mathrm{A}$ and $\mathrm{C}$?

A parallel-plate capacitor with no dielectric has a capacitance of $0.5\mathrm{\mu F}.$ The space between the plates is then filled with equal amounts of two dielectrics of dielectric constants. $2$ and $3$ in the two arrangements as shown one by one. Find the ratio of capacitances $C_{1_{ }}$and ${\mathrm{C}}_{\mathrm{II}}$.

As shown in figure, a dielectric substance of dielectric constant $\mathrm{K}$ is inserted in half of the portion between the plates of a parallel-plate capacitor. If its initial capacitance is $\mathrm{C},$ then what will be the new capacitance?

In a camera-flash circuit, a$2000 \mathrm{\mu F}$ Capacitor is charged by a$1.5 \mathrm{V}$Cell. When a flash is required, the energy stored in the capacitor is discharged by means of a trigger.$\mathrm{T}$ Through a discharge tube $\mathrm{D}$ in $0.1$Millisecond. Find the energy stored in the capacitor and the power of the flash.