Physics · Electrostatic Potential
हिन्दीFor a linear isotropic dielectric, the polarisation vector is related to the electric field by \( \mathbf{P} = \varepsilon_0 \chi_e \mathbf{E} \). The electric susceptibility \( \chi_e \) is:
Correct answer · Option 2
a dimensionless quantity
Explanation
Both \( \mathbf{P} \) and \( \varepsilon_0 \mathbf{E} \) have dimensions of surface charge density (\( \text{C}\cdot\text{m}^{-2} \)); hence, the susceptibility \( \chi_e = P/(\varepsilon_0 E) \) is dimensionless.