What core material property determines the inductance of an inductor?
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.
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 Application
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.
Key Concepts
Why Other Options 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.
题目解析
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.
考试技巧
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.
记忆口诀
Core property determining inductance = permeability. Think 'P'ermeability = 'I'nductance. Permeability determines how much inductance a core provides. Important for component knowledge.
实际应用示例
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.
错误选项分析
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.
知识点
Core material property, Determines inductance, Inductor, Permeability
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.