Question

Describe what happens to a dieletric material in the presenxe of an eternal electric field

Answer 1

Dielectrics are usually placed between the two plates of parallel plate capacitors. They can fully occupy the region between the plates or can partially occupy.

When the dielectric is placed between the two plates of parallel plate capacitor, it is polarized by the electric field present. The surface charge densities are considered as σp and – σp.

When the dielectric is fully placed between the two plates of capacitor then it’s dielectric constant increases from it’s vacuum value.