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  • Question

  • If a current of 40 mA flows through a series circuit consisting of a 0.4 µF capacitor and a resistor in series with a 4 kHz, 40 Vac source, what is the total circuit impedance?


  • Options
  • A. 10 Ω
  • B. 100 Ω
  • C. 1 k Ω
  • D. 1 M Ω

  • Correct Answer
  • 1 k Ω 

    • More questions

    • 1. 

      In the given circuit, the Thevenin voltage equals 6 V.


    • Options
    • A. True
    • B. False
      • Discuss
    • 2. What is the peak-to-peak current value when an ammeter measures a 20 mA value?

    • Options
    • A. 14 mA
    • B. 28 mA
    • C. 40 mA
    • D. 57 mA
      • Discuss
    • 3. At any resonant frequency, what voltage is measured across the two series reactive components?

    • Options
    • A. applied
    • B. reactive
    • C. zero
    • D. inductive and capacitive
      • Discuss
    • 4. 

      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
    • 5. Base currents are usually small because of the physical construction of the thin and lightly doped base.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Ferromagnetic materials have minute magnetic ___ created within their atomic structure by the orbital motion and spin of electrons.

    • Options
    • A. forces
    • B. flux lines
    • C. domains
    • D. tapes
      • Discuss
    • 7. 

      Connecting a capacitor filter to the circuit in the given circuit will___.


    • Options
    • A. produce a nearly-constant dc voltage
    • B. reduce the output voltage
    • C. increase the ripple voltage
    • D. lower the surge current
      • Discuss
    • 8. ECL gates are noted for their high frequency capability and small output voltage swing.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. 

      If the voltage between points A and B equals 9 V in the given circuit, then VR3 equals ______.


    • Options
    • A. 0.9 V
    • B. 8.1 V
    • C. 9 V
    • D. More information is needed to find VR3.
      • Discuss
    • 10. A Thevenin equivalent circuit contains _____.

    • Options
    • A. a voltage source in series with a resistance
    • B. a current source in series with a resistance
    • C. resistors in a series-parallel configuration
    • D. many voltage sources
      • Discuss

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