What parasitic characteristic creates an inductor’s self-resonance?
The correct answer is D: Inter-turn capacitance. What parasitic characteristic creates an inductor's self-resonance is inter-turn capacitance. The capacitance between turns of an inductor creates self-resonance. For amateur radio operators, this is important for understanding inductor behavior. Understanding this helps when working with inductors.
Exam Tip
Inductor self-resonance cause = inter-turn capacitance. Think 'I'nductor 'S'elf-'R'esonance = 'I'nter-turn 'C'apacitance. The capacitance between turns of an inductor creates self-resonance. Not skin effect, not dielectric loss, not coupling - just inter-turn capacitance.
Memory Aid
"Inductor self-resonance cause = inter-turn capacitance. Think 'I'nductor 'S'elf-'R'esonance = 'I'nter-turn 'C'apacitance. The capacitance between turns of an inductor creates self-resonance. Important for understanding inductor behavior."
Real-World Application
An inductor's self-resonance: It's created by inter-turn capacitance. The capacitance between adjacent turns of the inductor coil forms a resonant circuit with the inductance. This is the parasitic characteristic - inter-turn capacitance.
Key Concepts
Why Other Options Are Wrong
Option A (Skin effect): Incorrect. Skin effect isn't what creates self-resonance - inter-turn capacitance is. Skin effect isn't the cause.
Option B (Dielectric loss): Incorrect. Dielectric loss isn't what creates self-resonance - inter-turn capacitance is. Dielectric loss isn't the cause.
Option C (Coupling): Incorrect. Coupling isn't what creates self-resonance - inter-turn capacitance is. Coupling isn't the cause.
题目解析
The correct answer is D: Inter-turn capacitance. What parasitic characteristic creates an inductor's self-resonance is inter-turn capacitance. The capacitance between turns of an inductor creates self-resonance. For amateur radio operators, this is important for understanding inductor behavior. Understanding this helps when working with inductors.
考试技巧
Inductor self-resonance cause = inter-turn capacitance. Think 'I'nductor 'S'elf-'R'esonance = 'I'nter-turn 'C'apacitance. The capacitance between turns of an inductor creates self-resonance. Not skin effect, not dielectric loss, not coupling - just inter-turn capacitance.
记忆口诀
Inductor self-resonance cause = inter-turn capacitance. Think 'I'nductor 'S'elf-'R'esonance = 'I'nter-turn 'C'apacitance. The capacitance between turns of an inductor creates self-resonance. Important for understanding inductor behavior.
实际应用示例
An inductor's self-resonance: It's created by inter-turn capacitance. The capacitance between adjacent turns of the inductor coil forms a resonant circuit with the inductance. This is the parasitic characteristic - inter-turn capacitance.
错误选项分析
Option A (Skin effect): Incorrect. Skin effect isn't what creates self-resonance - inter-turn capacitance is. Skin effect isn't the cause. Option B (Dielectric loss): Incorrect. Dielectric loss isn't what creates self-resonance - inter-turn capacitance is. Dielectric loss isn't the cause. Option C (Coupling): Incorrect. Coupling isn't what creates self-resonance - inter-turn capacitance is. Coupling isn't the cause.
知识点
Parasitic characteristic, Inductor's self-resonance, Inter-turn capacitance, Inductor behavior
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.