Question

What happens when a dielectric is placed in an external electric field?

Answer 1

Diagram for external electric field

The explanation for dielectric in an external electric field

1. In general, dielectrics described as materials that are very poor conductors of electric current.
2. When an electric field applied to a capacitor, the dielectric material become polarized.
3. The happen due to charge by induction.
4. When the field polarized the negative charges in the material orient themselves toward the positive electrode.
5. The positive charges shift towards the negative electrode.
6. The effect of external electric field reduces due to the polarization of the dielectric material.
7. When polar dielectric placed in external electric field dipole experience torque.