Discussion
Home ‣ Electronics ‣ Capacitors Comments
- Question
When a 4.7 µF capacitor is connected to a 1 kHz source, what is its capacitive reactance?
Options- A. 4.7 ohms
- B. 29.5 ohms
- C. 34 ohms
- D. 213 ohms
- Correct Answer
- 34 ohms
- 1. What is the total opposition to current in a series RC circuit called?
Options- A. impedance
- B. inductance
- C. reactance
- D. resistance Discuss
- 2. In a capacitive circuit, current flow is limited to
Options- A. charging periods
- B. discharging periods
- C. neither charging periods nor discharging periods
- D. both charging periods and discharging periods Discuss
- 3. When a circuit consists of a capacitor and a resistor in series with a voltage source, and the voltage across the resistor is zero, then the capacitor is:
Options- A. charging
- B. discharging
- C. fully charged
- D. fully discharged Discuss
- 4. What is the value of a capacitor that can store two coulombs of charge when 500 volts is applied across its plates?
Options- A. 4 µF
- B. 250 µF
- C. 4,000 µF
- D. 250 F Discuss
- 5. The strength of an electric field at a given point is proportional to the potential difference on the plates and inversely proportional to the:
Options- A. plate separation
- B. negative plate only
- C. field strength
- D. charge difference Discuss
- 6. Capacitive reactance values connected in series offer
Options- A. an increase in total XC
- B. a decrease in total XC
- C. no change in total XC
- D. total opposition to voltage in the circuit Discuss
- 7. A capacitor is constructed of two parallel:
Options- A. conductors
- B. semiconductors
- C. inductors
- D. dielectrics Discuss
- 8.
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
- 9. A capacitor's rate of charge is considered:
Options- A. magnetic
- B. a current block
- C. linear
- D. exponential Discuss
- 10. 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
Capacitors problems
Search Results
Correct Answer: impedance
Correct Answer: both charging periods and discharging periods
Correct Answer: fully charged
Correct Answer: 4,000 µF
Correct Answer: plate separation
Correct Answer: an increase in total XC
Correct Answer: conductors
Correct Answer: 44.23 mVAR
Correct Answer: exponential
Correct Answer: 1 k Ω
Comments
There are no comments.More in Electronics:
Programming
Copyright İCuriousTab. All rights reserved.