Electrostatics ...

The energy required to charge a capacitor of 5µF by connecting a d. c. source of 20 kV is

The capacitance of a parallel plate capacitor is 12 µF. If the distance between the plates is doubled and area is halved, then new capacitance will be

A capacitor of capacitance 611F is charged upto 100 volt. The energy stored in the capacitor is

A parallel plate capacitor of capacity C₀ is charged to a potential V₀
(i) The energy stored in the capacitor when the battery is disconnected and the separation is doubled E₁
(ii) The energy stored in the capacitor when the charging battery is kept connected and the separation between the capacitor plates is doubled is E₂. Then E₁/E₂ value is

As in figure shown, if a capacitor C is charged by connecting it with resistance R, then energy is givenby the battery will be

When a lamp is connected in series with capacitor, then

If a dielectric substance is introduced between the plates of a charged air-gap capacitor. The energy of the capacitor will

Which is known as capacitive time constant?

The net charge on capacitor is

A capacitor of capacitance C is charged to a potential V. The flux of the electric field through a closed surface enclosing the capacitor is