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  • Question

  • A source voltage across a capacitor will:


  • Options
  • A. lead the current by 90 degrees
  • B. lead the current by 180 degrees
  • C. lag the current by 90 degrees
  • D. lag the current by 180 degrees

  • Correct Answer
  • lag the current by 90 degrees 

    • Capacitors problems

    Search Results

    • 1. A capacitor stores energy within a dielectric between the conducting plates in the form of:

    • Options
    • A. a magnetic field
    • B. positive voltage
    • C. negative voltage
    • D. an electric field
      • Discuss
    • 2. The voltage read by the voltmeter will be:


    • Options
    • A. 24 V
    • B. 12 V
    • C. 6 V
    • D. 4 V
      • Discuss
    • 3. What is RT for a 12 kΩ, a 4 kΩ, and a 3 kΩ resistor in parallel?

    • Options
    • A. 1.5 kΩ
    • B. 2 kΩ
    • C. 6.3 kΩ
    • D. 19 kΩ
      • Discuss
    • 4. 

      What would these meter readings indicate about the circuit in the given circuit?

      Meter Readings: I = 0 mA, V = 0 V


    • Options
    • A. R1 is open.
    • B. R2 is open.
    • C. The fuse is open.
    • D. The circuit is operating normally.
      • Discuss
    • 5. 

      In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total current is the amplifier providing to the speakers?


    • Options
    • A. 0 A
    • B. 1.5 A
    • C. 3 A
    • D. More information is needed to find the total current provided to the speakers.
      • Discuss
    • 6. With a 500 kHz signal source, what would be the value of a capacitor yielding a capacitive reactance of 1 k Ω?

    • Options
    • A. 318 pF
    • B. 2 nF
    • C. 3.18 µF
    • D. 2 F
      • Discuss
    • 7. What is the circuit's impedance?


    • Options
    • A. 1192 Ω
    • B. 843 Ω
    • C. 723 Ω
    • D. 511 Ω
      • Discuss
    • 8. If a charged capacitor is disconnected from a circuit, it will:

    • Options
    • A. immediately discharge
    • B. recharge
    • C. remain charged
    • D. leak the charge
      • Discuss
    • 9. 

      How long would it take the capacitor in the given circuit to completely discharge if the switch was in position 2?


    • Options
    • A. 22 ms
    • B. 69 ms
    • C. 345 ms
    • D. 420 ms
      • Discuss
    • 10. What is wrong with a leaky capacitor?

    • Options
    • A. It is open.
    • B. It is shorted.
    • C. The dielectric resistance has increased.
    • D. The dielectric resistance has decreased.
      • Discuss

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