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  • Question

  • A capacitor has 25 V across its plates and a stored charge of 1500 µC. What is the capacitance value?


  • Options
  • A. 60 pF
  • B. 60 µF
  • C. 16.67 mF
  • D. 37.5 mF

  • Correct Answer
  • 60 µF 

    • Capacitors problems

    Search Results

    • 1. Capacitor value markings are usually:

    • Options
    • A. alphanumeric
    • B. color dabs
    • C. standard
    • D. white print
      • Discuss
    • 2. What is the circuit's total current?


    • Options
    • A. 4.57 mA
    • B. 9.327 mA
    • C. 11.570 mA
    • D. 13.830 mA
      • Discuss
    • 3. What is the reactive power?


    • Options
    • A. 6.8 mW
    • B. 9.8 mW
    • C. 12.8 mW
    • D. 15.8 mW
      • Discuss
    • 4. What is the power factor if the apparent power of a circuit is 5 W, while the true power is 4 W?

    • Options
    • A. 0.0 W
    • B. 0.8 W
    • C. 1.0 W
    • D. 1.25 W
      • Discuss
    • 5. After a capacitor has charged for 1 tc, what percentage of current remains in the resistor?

    • Options
    • A. 63.2
    • B. 36.8
    • C. 13.5
    • D. 5.0
      • Discuss
    • 6. What is the impedance of a series RC circuit that consists of a 0.22 µF capacitor and a 200-ohm resistor connected to a 3 kHz source?

    • Options
    • A. 214 ohms
    • B. 313 ohms
    • C. 414 ohms
    • D. 880 ohms
      • Discuss
    • 7. What will a 1 µF capacitor store?

    • Options
    • A. one coulomb of charge
    • B. 6.24 x 1012 electrons
    • C. one volt
    • D. one µA of current
      • Discuss
    • 8. What is the impedance of an ac RC parallel circuit if the resistance is 12 ohms and the capacitive reactance equals 5 ohms?

    • Options
    • A. 0.2 ohms
    • B. 3.5 ohms
    • C. 4.6 ohms
    • D. 13 ohms
      • Discuss
    • 9. When is a capacitor fully charged?

    • Options
    • A. when the voltage across its plates is of the voltage from ground to one of its plates
    • B. when the current through the capacitor is the same as when the capacitor is discharged
    • C. when the voltage across the plates is 0.707 of the input voltage
    • D. when the current through the capacitor is directly proportional to the area of the plates
      • Discuss
    • 10. The quantity that represents an ideal capacitor dissipating 0 W of power is

    • Options
    • A. instantaneous power
    • B. true power
    • C. reactive power
    • D. resistive power
      • Discuss

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