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- Question
What is the capacitance of the circuit shown in the given circuit?
Options- A. 0.066 µF
- B. 0.9 µF
- C. 65.97 pF
- D. 900 pF
- Correct Answer
- 0.066 µF
- 1. You could increase the time constant of an RC circuit by
Options- A. adding a resistor in parallel with the circuit resistance
- B. adding a capacitor in parallel with the circuit capacitance
- C. increasing the amplitude of the input voltage
- D. exchanging the position of the resistor and capacitor in the circuit Discuss
- 2. 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 Discuss
- 3. A capacitor's rate of charge is considered:
Options- A. magnetic
- B. a current block
- C. linear
- D. exponential Discuss
- 4.
What is the reactive power in the given circuit?
Options- A. 0 VAR
- B. 691 µVAR
- C. 44.23 mVAR
- D. 1.45 kVAR Discuss
- 5. A capacitor is constructed of two parallel:
Options- A. conductors
- B. semiconductors
- C. inductors
- D. dielectrics Discuss
- 6. In an ac circuit, an output capacitor and a resistor are connected in series with an ac signal. What filter action will be the result?
Options- A. bandpass
- B. low-pass
- C. high-pass
- D. band-stop Discuss
- 7. In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:
Options- A. 45 V
- B. 50 V
- C. 55 V
- D. 60 V Discuss
- 8. What is the dielectric constant for ceramic?
Options- A. between 6 and 8000
- B. 5.0
- C. between 5 and 1000
- D. 3000 Discuss
- 9. If the reactive power of a circuit is 50 mW while the apparent power is 64 mW, then what is the true power of the circuit?
Options- A. 14 mW
- B. 36 mW
- C. 40 mW
- D. 114 mW Discuss
- 10. 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
Capacitors problems
Search Results
Correct Answer: adding a capacitor in parallel with the circuit capacitance
Correct Answer: 1 k Ω
Correct Answer: exponential
Correct Answer: 44.23 mVAR
Correct Answer: conductors
Correct Answer: low-pass
Correct Answer: 45 V
Correct Answer: between 6 and 8000
Correct Answer: 40 mW
Correct Answer: 1.31 mA
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