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  • Question

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


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • RC Circuits problems

    Search Results

    • 1. When a series RC circuit is used as a low-pass filter, the output is taken from across the capacitor.

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

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. If the bandwidth of an RC low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. In parallel RC circuits, the larger the value of C, the larger the phase angle.

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. 

      The phase angle in the given circuit equals___.


    • Options
    • A. 90°
    • B. 36.87°
    • C. 0°
    • D. 53.13°
      • Discuss
    • 8. 

      Connecting the oscilloscope as shown in the given figure will _____.


    • Options
    • A. measure the voltage across the source
    • B. measure the voltage across C1, R2, and C2
    • C. short R1
    • D. short C1, R2, and C2
      • Discuss
    • 9. 

      If the given circuit is used as a filter, the cutoff frequency is _____.


    • Options
    • A. 5 kHz
    • B. 14.47 kHz
    • C. less than 5 kHz
    • D. more than 20 kHz


      • Discuss
    • 10. In a series RC circuit, the phase difference between the current and the source voltage _____.

    • Options
    • A. depends on the values of R and C
    • B. equals 0°
    • C. equals 90°
    • D. depends on the amplitude of the input voltage
      • Discuss

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