Briefly explain what polarization is in a dielectric materia

Briefly explain what polarization is in a dielectric material. An infinite sheet located on the x = 0 plane carries a surface charge with density rho_2, How much energy is required of moving a test charge Q from the point (0, 1, 1) to (1, 2, 1)? Why? Which of the following statements is NOT true? Electric flux lines are always orthogonal to equipotential surfaces. Electric current flowing in a copper wire us an example of conducting current. The capacitance of an ideal capacitor filled by a dielectric is independent of the charge on the plates and the potential difference between the plates. A conductor is always an equipotential body. Two grounded conducting plates are inclined at an angle of 90 do great to each other with a single point charge between them. If you wanted to use the method of images to analyze this setup, how many image charges would there be?

Solution

1. When a dielectric is placed in an external electric field, electric charges do not flow through the material as they flow in a conductor, but the charges slightly shift from their average equilibrium positions. This process is known as polarisation and a dielectric material is said to be polarized.

2. While crossing the interface between two dielectrics, the electric field incident at an angle ₁ in the first medium having dielectric constant k₁ gets refracted at an angle ₂ in the second medium having dielectric constant k₂ such that Tan₁ / Tan₂ = k₁ / k₂