which of the following cannot be polarized
LectureNotes said which of the following cannot be polarized
Answer:
Certain materials have the property of being able to be polarized, while others cannot. In the context of polarization, non-polarizable materials include metals and ionic compounds. These materials cannot be polarized due to the free movement of charges within them, which leads to an instant rearrangement of charges when an external electric field is applied.
Metals, such as copper and aluminum, are good examples of materials that cannot be polarized. In metals, the electrons are free to move and redistribute themselves, allowing the material to conduct electricity effectively. The presence of these free electrons prevents the establishment of a fixed polarity within the material.
Similarly, ionic compounds like table salt (NaCl) also cannot be polarized. In these compounds, the positive and negative ions are already arranged in a fixed lattice structure. When an electric field is applied, the ions merely shift slightly within the lattice, rather than developing distinct positive and negative ends.
Therefore, when LectureNotes mentioned “which of the following cannot be polarized,” they were likely referring to materials like metals and ionic compounds due to their inherent properties that prevent the establishment of a permanent polarity.