An insulating material is placed between the plates of a charged capacitor that has been disconnected from its battery, so the charge Q on the plates cannot change. What is the name given to an insulating material that responds to the field by becoming polarized in this way?

1. The material placed between the plates is insulating, so charge cannot move through it. 2. The electric field between the plates polarizes the material's molecules. 3. An insulating material that becomes polarized this way is named a dielectric. _Source: OpenStax Physics (CC BY 4.0), Ch 18 "Static Electricity", section Dielectrics_