Question

In the relation \[\mathbf{P} = \varepsilon_0 \chi_e \mathbf{E}\], the quantity \(\varepsilon_0\) represents:

Options

• The polarisation vector of the dielectric

• The electric susceptibility of the dielectric

• The permittivity of free space

• The applied electric field inside the material

Answer 1

\(\varepsilon_0\) denotes the permittivity of free space, a universal constant appearing in the polarisation relation \[\mathbf{P} = \varepsilon_0 \chi_e \mathbf{E}\] for a linear isotropic dielectric.