Deep Dive: E6D06
The correct answer is D: Permeability. What core material property determines the inductance of an inductor is permeability. Permeability determines how much inductance a core provides. For amateur radio operators, this is important for component knowledge. Understanding this helps when selecting core materials.
Why Other Answers Are Wrong
Option A (Permittivity): Incorrect. Permittivity is for capacitors, not inductors - permeability determines inductance. Permittivity isn't the property. Option B (Resistance): Incorrect. Resistance doesn't determine inductance - permeability does. Resistance isn't the property. Option C (Reactivity): Incorrect. Reactivity isn't a property - permeability determines inductance. Reactivity isn't the property.
Exam Tip
Core property determining inductance = permeability. Think 'P'ermeability = 'P'rovides 'I'nductance. Permeability determines how much inductance a core provides. Not permittivity (capacitors), not resistance, not reactivity - just permeability.
Memory Aid
Core property determining inductance = permeability. Think 'P'ermeability = 'I'nductance. Permeability determines how much inductance a core provides. Important for component knowledge.
Real-World Example
The inductance of an inductor: It's determined by the permeability of the core material. Higher permeability means more inductance for the same number of turns. This is the property - permeability determines inductance.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E6D
Reference: 2024-2028 Question Pool · E6 - Circuit Components
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E6D topic.