Capacitor

$5\mu F$ capacitor is charged by a 100 V supply. The supply is then disconnected and the charged capacitor is connected to another uncharged  $3\mu F$ capacitor. How much electrostatic energy of the first capacitor is lost in the process of attaining the steady situation (in mJ)

Find the equivalent capacitance between $A\&B$

 The capacitance between the points $A$ and $B$ of the combination is

The separation between the two capacitor plates is $2 \mathrm{cm}$ and the area of the plate is $300 c{m^2}^{}$. Calculate the capacitance of the parallel plate capacitor when the dielectric material is placed between the plates? [The dielectric constant of the material is $5.5$].
 

In the circuit shown in the figure switch S is closed at time$t=0$ Select the correct statement

Condenser is a device used to store

Find the equivalent capacitance between $A$ and $B$.

A parallel plate condenser has conducting plates of radius $12 \mathrm{cm}$ separated by a distance of $5 \mathrm{mm}$. It is charged with a constant charging current of $0.16 \mathrm{A}$, the rate at which the potential difference between the plate change is

In a $\mathrm{RC}$ circuit, where $R$ is resistance and $C$ is capacitance which of the following has the dimension of time.

The earth is assumed to be a charged conducting sphere having volume $V$ and surface area $A$. The capacitance of the earth in free space is (${\epsilon }_0=$ permittivity of free space)

A flat circular coil of $10 \mathrm{cm}$ radius has $200$ turns of wire. The coil is connected to a capacitor of $20\mu \mathrm{F}$ placed in a uniform magnetic field whose induction decreases at a rate of $0.01{\mathrm{Ts}}^{-1}$. Find the charge on capacitor

The figure given below shows a network of four capacitors of capacitance equal to $C_1=C, C_2=2C, C_3=3C, C_4=4C$ are connected to a battery. The ratio of charges on $C_2\mathrm{ }\mathrm{a}\mathrm{n}\mathrm{d} C_4$ is $\frac{x}{22}$, find $x$.

A capacitor of capacity ${\mathrm{C}}_1=2 \mu \mathrm{F}$ is charged to a potential of $100 \mathrm{V}$. The charging battery is then removed and now ${\mathrm{C}}_1$ is connected to another uncharged capacitor of capacity ${\mathrm{C}}_2=4 \mu \mathrm{F}$. One plate of $C_2$ is earthed as shown. In steady state the charge on $C_1$ (in $\mathrm{\mu C}$) will be _____ .

In steady state, current supplied by battery is

Eight drops of mercury of equal radii possessing equal charges combine to form a big drop. Then, the capacitance of bigger drop compared to each individual small drop is

In an isolated charged capacitor, the distance between the plates is halved. Which of the following quantities get halved?

Two plates are at potentials $-10\mathrm{V}$ and $+30\mathrm{V}$. If the separation between the plates is $2 \mathrm{cm}$ then find the electric field between them.

Calculate final charge on $1\mu \mathrm{F}$ capacitor:

Initially, sphere $A$ has a charge of $-50 e$ and sphere $B$ has a charge of $+20 e$. The spheres are made of conducting material and are identical in size. If the spheres then touch, what is the resulting charge on sphere $A$?

What is flux capacitor?