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Frage 215

How does a capacitor react to AC?

  1. As the frequency of the applied AC increases, the reactance decreasesRichtige Antwort
  2. As the frequency of the applied AC increases, the reactance increases
  3. As the amplitude of the applied AC increases, the reactance increases
  4. As the amplitude of the applied AC increases, the reactance decreases

Erklärung

Capacitive reactance is inversely proportional to frequency, so the higher the frequency the lower the opposition a capacitor presents. This is the opposite of an inductor, and amplitude plays no part in either case.

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Frage 215: How does a capacitor react to AC? · FCC General Class (Element 3) · Questena