
Diagram shows 6 identical air capacitors connected to an ideal battery . In this condition, charge on capacitor is . Now a dielectric whose dielectric constant is , is put between the plates of so that it occupies the entire space between the plates. Now charge on becomes . Then should be


Important Questions on Electrostatics


In the circuit shown, find if the effective capacitance of the whole circuit is to be All values in the circuit are in


Figure shows charge versus voltage graph for series and parallel combination of two given capacitors. The capacitances are:



Three capacitances, each of 3 , are provided. These cannot be combined to provide the resultant capacitance of :

In the circuit shown, charge on the capacitor is :




The figure shows a capacitor of capacitance connected to a battery via a switch, having a total charge on it, in steady-state. When the switch is turned from position to position , the energy dissipated in the circuit is


Figure shows a network of capacitors where the number indicates capacitances in micro Farad. The value of capacitance C if the equivalent capacitance between point A and B is to be is :

The equivalent capacitance between and is,

A parallel plate capacitor with plates of unit area and separation is filled with a liquid of dielectric constant , the level of liquid isinitially.
Suppose, the liquid level decreases at a constant speed , the time constant as a function of time is

The equivalent capacitance of the combination of the capacitors is


When a thick slab is introduced between all the plates, in order to maintain the same potential difference, the distance between the plates is increased by . Find the dielectric constant of the slab.





