Dielectric Constant Or Relative Permittivity|Questions|Electrostatic Vs Gravitational Force

Electrostatic force is

Electrostatic forces are ……… forces.

Dielectric constant of pure water is 81. Its permittivity will be

The figure shows two identical parallel plate capacitors connected to a battery with the switch S closed. The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant(or relative permittivity) 3. Find the ratio of the total electrostatic energy stored in both capacitors before and after the introduction of the dielectric.

The capacitance of a parallel plate condenser is C_(0) If a dielectric of relative permittivity epsilon_(r) and thickness equal to one fourth the plate separation is placed between the plates, then its capacity becomes C. The value of (C)/(C_(0)) will be -

When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i.e. dielectric constant of the ionised layer

The electrostatic and gravitational forces are similar because