Electrostatic P...

A series combination of $${ n }_{ 1 }$$ capacitors, each of value $${ C }_{ 1 }$$ , is charged by a source of potential different 4 V. When another parallel combination of $${ n }_{ 2 }$$ capacitors, each of value $${ C }_{ 2 }$$, is charged y a source of potential difference V, it has the same(total) energy stored in it, as the first combination has. The value $${ C }_{ 2 }$$, in terms of $${ C }_{ 1 }$$, is then;

A capacitor has some dielectric between its plates, and the capacitor is connected to a dc source. The battery is now disconnected and then the dielectric is removed, then

A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates:

Three capacitors each of capacity 4 $$\mu F$$ are to be connected in such a way that the effective capacitance is 6 $$\mu F$$. This can be done by:

A capacitor consists of two metal plates each $$10{\text{ }}cm$$ by $$20{\text{ }}cm;$$ they are separated by a $$2.0{\text{ }}mm$$ thick insulator with dielectric constant $$4.1$$ and dielectric strength 6.0107 V/m. What is the capacitance in $$pF\left( {{{10}^{ - 12}}F} \right)?$$

Find the equivalent capicitance between points $$A$$ and $$B$$ of the circuit shown, each capacitance $$= C$$.

Equipotential surfaces are 

Work done in moving an object through an equipotential surface is 

An example of an equipotential surface in earth is 

A parallel plate capacitor is given a definite potential difference. Keeping the potential difference same, a slab of thickness 3 mm is placed between the plates. To do this, the distance between the plates is increased by 2.4 mm. Calculate the dielectric constant of the slab.