Electrostatics ...

Consider the situation shown in the figure. The capacitor A has a charge q on it whereas B is uncharged. The charge appearing on the capacitor B a long time after the switch is closed is

A capacitor of capacitance C₁ = 1 µF can with stand maximum voltage V₁ = 6 kV (kilo-volt) and another capacitor of capacitance C₂ = 3 µF can withstand maximum voltage V₂ = 4 kV. When the two capacitors are connected in series, the combined system can withstand a maximum voltage of

In the given figure each plate of capacitance C has partial value of charge

The plates of a capacitor are charged to a potential difference of 320 volts and are then connected across a resistor. The potential difference across the capacitor decays exponentially with time. After 1 second the potential difference between the plates of the capacitor is 240 volts, then after 2 and 3 seconds the potential difference between the plates will be

The plates of a parallel plate condenser are pulled apart with a velocity v. If at any instant their mutual distance of separation is d, then the magnitude of the time of rate of change of capacity depends on d as follows

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 raised by \'∆T\', the potential difference \'V\' across the capacitance is

A 4 µF capacitor, a resistance of 2.5 M Ω is in series with 12 V battery. Find the time after which the potential difference across the capacitor is 3 times the potential difference across the resistor. [Given In (2) =0.693]]

A parallel plate capacitor of area A, plate separation d and capacitance C is filled d with three different dielectric materials having dielectric constants k₁, k₂ and k₃ as shown. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by

In the figure a capacitor is filled with dielectrics. The resultant capacitance is