Electrostatics ...

An air filled parallel plate capacitor has capacity C. If distance between plates is doubled and it is immersed in a liquid then capacity becomes twice. Dielectric constant of the liquid is

A spherical drop of capacitance 1 µF is broken into eight drops of equal radius. Then, the capacitance of each small drop is ....

The work done in placing a charge of 8 × 10^–18 coulomb on a condenser of capacity 100 mF is

64 drops of mercury each charged each charged to a potential of 10V. They are combined to form one bigger drop. The potential of this drop will be (Assume all the drops to be spherical)

A spherical drop of mercury having a potential of 2.5V is obtained as a result of merging 125 droplets. The potential of constituent droplets would be

A capacitor is charged to 200 volt it has 0.1 coulomb charge. When it is discharged, energy will be

n identical droplets are charged to V volt each. If they coalesce to form a single drop, then its potential will be

A capacitor is charged by a battery and the energy stored is U. The battery is now removed and the separation distance between the plates is doubled. The energy stored now is

A 2 µF capacitor is charged as shown in figure. The percentage of its stored energy dissipated after the switch S is turned to position 2 is

In the given circuit, a charge of + 80 µC is given to the upper plate of the 4µF capacitor. Then in the steady state, the charge on the upper plate of the 3 µF capacitor is