Write the relation between $\vec{P}$ and $\vec{E}$ for a linear isotropic dielectric.

$A$ cube of side $1 \ cm$ contains $100$ molecules,each having an induced dipole moment of $0.2 \times 10^{-6} \ C \cdot m$ in an external electric field of $4 \ N \cdot C^{-1}$. The electric susceptibility of the material is .... $C^2 \cdot N^{-1} \cdot m^{-2}$.

Choose the correct relation between polarisation $P$ and electric susceptibility $\chi_{e}$ of a dielectric material. ($E =$ electric field)

What are polar and non-polar molecules?

Which of the following statements is false in the case of polar molecules?

What is a dielectric?