Electrostatic P...

An air-filled parallel plate capacitor has a capacity $$2 pF$$. The separation between the plates is doubled and the interspace is filled with wax, If the capacity is increased to 6 pF, the dielectric constant of the wax is :

Find $$C_{AB}$$ in the given circuit of given figure. Assume each capacitor is C:

If each capacitor is C find $$C_{AB}$$ in the given circuit :

A capacitor has charge $$50\mu$$ C. When the gap between the plates is filled with glass wool 120 $$\mu $$ C charge flows through the battery. The dielectric constant of glass wool is :

A $$1\  mm$$ thick paper of dielectric constant 4 lies between the plates of a parallel-plate capacitor. It is charged to 100 volt the intensity of electric field between the plates of the condenser will be  :

A parallel plate condenser with plate separation d is charged with the help of battery so that $$V_0$$ energy is stored in the system. The battery is now removed. a plate of dielectric constant k and thickness d is placed between the plates of condenser. The new energy of the system will be :

Two condensers each of capacitance $$2\mu F$$ are connected in parallel and this combination is connected in series with a $$12\mu F$$ capacitor. The resultant capacity of the system will be:

A parallel plate condenser is connected to a battery of emf 4 volt. If a plate of dielectric constant 8 is inserted into it, the potential difference on the condenser will be :

A battery of 100 V is connected to series combination of two identical parallel-plate condensers. If dielectric of constant 4 is slipped between the plates of second condenser, then the potential difference on the condensers will respectively become :

The distance between the plates of a parallel plate air condenser is d. if a copper plate of the same area but thickness $$\dfrac d2$$ is placed between the plates then the new capacitance will become :