Which of the following components should be added to a capacitor to increase the capacitance?
The correct answer is C: A capacitor in parallel. The component that should be added to a capacitor to increase the capacitance is a capacitor in parallel. Parallel capacitors add directly, increasing total capacitance. For amateur radio operators, this is a basic parallel capacitance principle. Understanding this helps when designing circuits.
Exam Tip
Increase capacitance = add capacitor in parallel. Think 'I'ncrease 'C'apacitance = 'I'n parallel 'C'apacitors add. Parallel capacitors add directly, increasing total capacitance. Not inductor, not series capacitor - just parallel capacitor.
Memory Aid
"Increase capacitance = add capacitor in parallel. Think 'I'ncrease 'C'apacitance = 'I'n parallel. Parallel capacitors add directly, increasing total capacitance. Standard way to increase capacitance."
Real-World Application
You have a 10 µF capacitor and want more capacitance. You add a 20 µF capacitor in parallel. Total capacitance = 10 + 20 = 30 µF. Parallel capacitors add directly, increasing total capacitance. This is how you increase capacitance.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. An inductor in series doesn't increase capacitance - inductors affect inductance, not capacitance. Series inductor doesn't help.
Option B: Incorrect. An inductor in parallel doesn't increase capacitance - inductors affect inductance, not capacitance. Parallel inductor doesn't help.
Option D: Incorrect. A capacitor in series decreases total capacitance - series capacitors use reciprocal formula, reducing capacitance. Series capacitor doesn't increase capacitance.
题目解析
The correct answer is C: A capacitor in parallel. The component that should be added to a capacitor to increase the capacitance is a capacitor in parallel. Parallel capacitors add directly, increasing total capacitance. For amateur radio operators, this is a basic parallel capacitance principle. Understanding this helps when designing circuits.
考试技巧
Increase capacitance = add capacitor in parallel. Think 'I'ncrease 'C'apacitance = 'I'n parallel 'C'apacitors add. Parallel capacitors add directly, increasing total capacitance. Not inductor, not series capacitor - just parallel capacitor.
记忆口诀
Increase capacitance = add capacitor in parallel. Think 'I'ncrease 'C'apacitance = 'I'n parallel. Parallel capacitors add directly, increasing total capacitance. Standard way to increase capacitance.
实际应用示例
You have a 10 µF capacitor and want more capacitance. You add a 20 µF capacitor in parallel. Total capacitance = 10 + 20 = 30 µF. Parallel capacitors add directly, increasing total capacitance. This is how you increase capacitance.
错误选项分析
Option A: Incorrect. An inductor in series doesn't increase capacitance - inductors affect inductance, not capacitance. Series inductor doesn't help. Option B: Incorrect. An inductor in parallel doesn't increase capacitance - inductors affect inductance, not capacitance. Parallel inductor doesn't help. Option D: Incorrect. A capacitor in series decreases total capacitance - series capacitors use reciprocal formula, reducing capacitance. Series capacitor doesn't increase capacitance.
知识点
Capacitance increase, Parallel capacitor, Capacitance addition, Parallel circuit
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.