Electrostatics ...

The potential energy of a charged parallel plate capacitor is U₀, if a slab of dielectric constant k is inserted between the plates, then the new potential energy will be

The energy of a charged capacitor is given by the expression (q = charge on the conductor and C = its capacity)

In a charged capacitor, the energy resides

If the circumference of a sphere is 2m, then capacitance of sphere in water would be

If the charge on a capacitor is increased by 2 coulomb, the energy stored in it increase by 21%. The original charge on the capacitor is

The potential gradient at which the dielectric of a condenser just gets punctured is called

A parallel plate condenser has a capacitance 50µF in air and 110µF when immersed in an oil. The dielectric constant \'k\' of the oil is

The potential to which a conductor is raised, depends on

A parallel plate capacitor with air between the plates has a capacitance of 9 pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k₁ = 3 and thickness d/3 while the other one has dielectric constant k₂ = 6 and thickness 2d/3. Capacitance of the capacitor is now

1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. The potential of the big drop is larger than that of the smaller drop by a factor of