Dielectrics and Polarisation

Two point charges $+4\mu \mathrm{C}$ and $-10\mu \mathrm{C}$ are placed $10\mathrm{cm}$ apart in air. A dielectric slab of large length and breadth but of thickeness $5\mathrm{cm}$ is placed between them. Calculate the force of attraction between the charges, if the relative permittivity of dielectric is $9$ .

Which of the following option is the pair of polar molecules?

The dimensional formula of Polarization $P$ is _____

A dielectric material gets _____ when it placed in an electric field.

 When a dielectric is placed in an external electric field a dielectric gets polarised.This statement is ture or false.

When dielectric is placed in an electric field the field within the dielectric is?

Which molecule has a zero dipole moment, polar or non-polar?

What is a non-polar molecule?

Water (H₂O) is an example of polar molecules.

Which are polar molecules?

An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of $V_0.$ If the common potential after sharing of charges becomes $V\mathit{,}$ then the dielectric constant of the dielectric must be

What is a non-polar molecule? Give an example.

Which of the following is an example of polar molecule?

What do you mean by dielectrics?

Define polar molecule.

The Dielectric constant of a medium is the ratio of the permittivity of the substance to the permittivity of free space

Derive the S.I. unit of atomic polarizability.

What do you mean by atomic polarizability?

The energy density at a point in a medium of dielectric constant $8$ is $26.55\times {10}^6 \frac{\mathrm{J}}{{\mathrm{m}}^3}$. Calculate electric field intensity at that point in ${10}^9 \mathrm{N}/\mathrm{C}$.  (Report your answer rounded off to 3 decimal places) 

Explain the behaviour of dielectric slab which is subjected to an external electric field.