A uniform static electric field of magnitude in air (treat air as vacuum) meets the…
PHYSICS · Multi-part · Fermi University Physics · Electricity, Magnetism & Electromagnetism · Electric fields in matter · Maxwell's equations and conservation laws
Electricity, Magnetism and Electromagnetism, Ch Displacement current, Maxwell's equations and boundary conditions
Problem
A uniform static electric field of magnitude 800Vm−1 in air (treat air as vacuum) meets the flat surface of a slab of glass of relative permittivity εr=2.5. The field makes an angle of 60∘ with the surface. There is no free charge on the surface, and the glass is a linear dielectric.
((a)) Find the tangential and normal components of the field just inside the glass.
((b)) Find the magnitude of the field in the glass and the angle it makes with the surface.