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  • Question

  • If the bandwidth of an RC low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz.


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  • A. True
  • B. False

  • Correct Answer
  • True 

    • RC Circuits problems

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    • 1. In parallel RC circuits, the larger the value of C, the larger the phase angle.

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    • A. True
    • B. False
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    • 2. Resistance is the same as impedance in an RC circuit.

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    • A. True
    • B. False
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    • 3. 

      The magnitude of the impedance in the given circuit is approximately 500 Ω.


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    • A. True
    • B. False
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    • 4. If the resistor drops 6 V and the capacitor drops 8 V in a series RC circuit, the source voltage equals 10 V.

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    • A. True
    • B. False
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    • 5. The current lags the source voltage in a series RC circuit.

    • Options
    • A. True
    • B. False
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    • 6. A 10 kΩ capacitive reactance equals a 100 µS capacitive susceptance.

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    • A. True
    • B. False
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    • 7. The output voltage from an RC high-pass filter increases as the frequency decreases.

    • Options
    • A. True
    • B. False
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    • 8. When a series RC circuit is used as a low-pass filter, the output is taken from across the capacitor.

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    • A. True
    • B. False
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    • 9. If a 100 Ω resistance is connected to a 100 Ω capacitive reactance in a series RC circuit, the impedance equals 200 Ω.

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    • A. True
    • B. False
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    • 10. If the frequency increases in a parallel RC circuit, the phase angle decreases.

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    • A. True
    • B. False
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