Electronics - Capacitors

Exercise :: Capacitors - General Questions

66. 

A capacitor and an output resistor form a series circuit with a square wave applied. The circuit is:

A. an integrator
B. a differentiator
C. a multiplier
D. a divider

Answer: Option B

Explanation:

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67. 

Capacitive reactance values connected in series offer

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

Answer: Option A

Explanation:

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68. 

The quantity that represents an ideal capacitor dissipating 0 W of power is

A. instantaneous power
B. true power
C. reactive power
D. resistive power

Answer: Option B

Explanation:

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69. 

If a capacitor is placed across a 20 V source, what will be the amount of charge after 5 tc?

A. 5.0 V
B. 12.8 V
C. 13.5 V
D. 20 V

Answer: Option D

Explanation:

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70. 

What is the impedance of an ac RC parallel circuit if the resistance is 12 ohms and the capacitive reactance equals 5 ohms?

A. 0.2 ohms
B. 3.5 ohms
C. 4.6 ohms
D. 13 ohms

Answer: Option C

Explanation:

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