Capacitor

In the given circuit diagram when the current reaches steady state in the
circuit, the charge on the capacitor of capacitance C will be:

A capacitance of 2 \(\mu\)F is required in an electrical circuit across a potential difference of 1.0 kV. A large
number of 1 \(\mu\)F capacitors are available which can withstand a potential difference of not more than 300 V.
The minimum...

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

Figure shows a network of capacitors where the numbers indicates capacitances in micro Farad. The value of capacitance C if the equivalent capacitance between point A and B is to be 1 \(\mu\)F is :

A combination of capacitors is set up as shown in the figure. The magnitude of the electric field, due to a point charge \(Q\) (having a charge equal to the sum of the charges on the \(4\) \(\mu \,F\) and \(9\) \(\mu \,F\) capacitors), at a...

In the given circuit, charges \({Q_2}\) on the \(2\mu F\) capacitor changes as \(C\) is varied from \(1\,\mu F\) to \(3\mu F.\) \({Q_2}\) as a function of \('C'\) is given properly by:
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A parallel plate capacitor is made of two circular plates separated by a distance \(5\) \(mm\) and with a dielectric of dielectric constant \(2.2\) between them. When the electric field in the dielectric is \(3 \times {10^4}\,V/m\) the char...

Two capacitors \({C_1}\) and \({C_2}\) are charged to \(120\) \(V\) and \(200\) \(V\) respectively. It is found that connecting them together the potential on each one can be made zero. Then

The figure shows an experimental plot for discharging of a capacitor in an R-C circuit. The time constant \(\tau\) of this circuit lies between

Let \(C\) be the capacitance of a capacitor discharging through a resistor \(R.\) Suppose \({t_1}\) is the time taken for the energy stored in the capacitor to reduce to half its initial value and \({t_2}\) is the time taken for the charge...

A parallel plate capacitor with air between the plates has capacitance of \(9\) \(pF.\) The separation between its plates is \('d'.\) The space between the plates has dielectric constant \({k_1}\) \(=3\) and thickness \({d \over 3}\) while ...

A parallel plate condenser with a dielectric of dielectric constant \(K\) between the plates has a capacity \(C\) and is charged to a potential \(V\) volt. The dielectric slab is slowly removed from between the plates and then reinserted. T...

A battery is used to charge a parallel plate capacitor till the potential difference between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the batter...

A fully charged capacitor has a capacitance \('C'\). It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity \('s'\) and mass \('m'.\) If the temperature of the block is rai...

A parallel plate capacitor is made by stacking \(n\) equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is \('C'\) then the resultant capacitance is

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

The work done in placing a charge of \(8 \times {10^{ - 18}}\) coulomb on a condenser of capacity \(100\) micro-farad is

If there are \(n\) capacitors in parallel connected to \(V\) volt source, then the energy stored is equal to

Capacitance (in \(F\)) of a spherical conductor with radius \(1\) \(m\) is