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Home ‣ Electronics ‣ Capacitors See What Others Are Saying!
  • Question

  • Which of the following statements is true?


  • Options
  • A. The voltage to which a capacitor is charged can change instantaneously.
  • B. The current in a capacitive circuit takes time to change.
  • C. A fully charged capacitor appears as a short to dc current.
  • D. An uncharged capacitor appears as a short to an instantaneous change in current.

  • Correct Answer
  • An uncharged capacitor appears as a short to an instantaneous change in current. 

    • More questions

    • 1. Most of the input signals applied to a computer for storage or processing are digital in nature.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The voltage-follower amplifier circuit has a fixed voltage gain of approximately 10.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A retriggerable one-shot has a pulse width of 10 ms; 3 ms after being triggered, another trigger pulse is applied. The resulting output pulse will be _________ ms.

    • Options
    • A. 3
    • B. 7
    • C. 10
    • D. 13
      • Discuss
    • 4. The phase difference between the input and output ac voltage signals of a common-emitter amplifier is __________.

    • Options
    • A. 0º
    • B. 90º
    • C. 180º
    • D. 360º
      • Discuss
    • 5. The voltage across a ___ resistor is 12 V and the current through it is 500 µA.

    • Options
    • A. 600 Ω
    • B. 2.4 kΩ
    • C. 6 kΩ
    • D. 24 kΩ
      • Discuss
    • 6. Which electronics material opposes the movement of free electrons?

    • Options
    • A. Conductor
    • B. Insulator
    • C. Semiconductor
    • D. Element
      • Discuss
    • 7. The removal of a non-neutral subatomic particle converts the atom into a:

    • Options
    • A. charged ion
    • B. nucleus
    • C. heavier element
    • D. compound
      • Discuss
    • 8. The forward biased characteristics of a zener diode are the same as those of a diode.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Which type of PLD should be used to program basic logic functions?

    • Options
    • A. PLA
    • B. PAL
    • C. CPLD
    • D. SLD
      • Discuss
    • 10. If one of the resistors opens in a parallel circuit branch, the total resistance of the circuit will decrease.

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

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