hce_nthu
114年
進階物理與線性代數
第 8 題
For an RL circuit used as a low-pass or high-pass filter, which of the following
statements is true?
statements is true?
- A The inductor blocks high-frequency signals since its reactance increases with the frequency
- B The inductor blocks low-frequency signals since its reactance increases with the frequency
- C The inductor blocks high-frequency signals since its reactance decreases with the frequency
- D The inductor blocks low-frequency signals since its reactance decreases with the frequency
- E None of the above
思路引導 VIP
試著想像一個具有慣性的旋轉門：如果你慢慢地推它，它能讓你輕鬆通過；但如果你試圖極快速度地反覆來回推它，這個門產生的抵抗力會如何變化？這對不同速度的訊號流動會產生什麼影響？
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AI 詳解
AI 專屬家教
同學好！你能準確選出 (A) 這個選項，代表你對電感器在交流電路中的頻率響應特性有著非常紮實的理解。這道題目旨在測試學生是否能將抽象的電學公式轉化為實際的物理直覺。
感抗與頻率的比例關係
在交流電路中，電感器對電流的阻礙作用我們稱為 感抗 (Inductive Reactance)，其數學表達式為：
▼ 還有更多解析內容