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Capacitors problems


  • 1. What is the total current for a 5 MHz, 1 Vac circuit that consists of a 27 pF capacitor and a 1 kΩ resistor connected in parallel?

  • Options
  • A. 459 µA
  • B. 647 µA
  • C. 1.31 mA
  • D. 1.85 mA
  • Discuss
  • 2. What is the voltage across the capacitor?

    Electronics Capacitors: What is the voltage across the capacitor?

  • Options
  • A. 7.07 V
  • B. 1.11 V
  • C. 111 mV
  • D. 7.07 mV
  • Discuss
  • 3. As a capacitor is being charged, the voltage across its terminals will:

  • Options
  • A. increase
  • B. decrease
  • C. remain the same
  • D. oppose the source
  • Discuss
  • 4. What is the reactance value for a capacitor installed in a dc circuit?

  • Options
  • A. zero
  • B. moderate
  • C. infinite
  • D. cannot tell
  • Discuss
  • 5. What is the total capacitance?

    Electronics Capacitors: What is the total capacitance?

  • Options
  • A. 1 F
  • B. 12 F
  • C. 0.615 F
  • D. 8 F
  • Discuss
  • 6. Which material has the highest dielectric strength?

  • Options
  • A. Air
  • B. Paper
  • C. Mica
  • D. Oil
  • Discuss
  • 7. Most older types of paper capacitors have been replaced by which type of construction?

  • Options
  • A. electrolytic
  • B. plastic film
  • C. oxide casing
  • D. waxed paper
  • Discuss
  • 8. What is the impedance of this circuit?

    Electronics Capacitors: What is the impedance of this circuit?

  • Options
  • A. 5928 Ω
  • B. 2000 Ω
  • C. 1902 Ω
  • D. 1798 Ω
  • Discuss
  • 9. How is ac current related to ac voltage in a purely capacitive circuit?

  • Options
  • A. AC current is 0.707 of the ac voltage.
  • B. AC current lags ac voltage.
  • C. AC current is 0.637 of the ac voltage.
  • D. AC current leads ac voltage.
  • Discuss
  • 10. For a given charge difference, electrostatic field strength varies according to:

  • Options
  • A. plate differential
  • B. plate area
  • C. plate distance
  • D. dielectric quantity
  • Discuss

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