1. Concept: Dielectric insulators are classified by the natural state of their molecules, but both types successfully polarize and function perfectly inside a capacitor.
2. Formula: $$ P_{total} = P_{orientation} + P_{electronic} $$
3. Solution: - Polar dielectrics (like water) have molecules with permanent dipole moments that physically rotate to align with the external field.
- Non-polar dielectrics (like air or rubber) have symmetrical molecules, but the external field distorts their electron clouds, inducing temporary dipoles.
- Both categories successfully generate an opposing internal electric field, fulfilling their role as dielectrics.
4. Why other options are incorrect: Selecting only I or only II fails to recognize that the fundamental requirement of a dielectric is simply that it is an insulator capable of polarization, regardless of its baseline molecular symmetry.
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