Electronics - Capacitors

Exercise :: Capacitors - General Questions

6. 

When a 4.7 F capacitor is connected to a 1 kHz source, what is its capacitive reactance?

A. 4.7 ohms
B. 29.5 ohms
C. 34 ohms
D. 213 ohms

Answer: Option C

Explanation:

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7. 

What is the total capacitance?

A. 1 F
B. 12 F
C. 0.615 F
D. 8 F

Answer: Option B

Explanation:

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8. 

What is this circuit?

mcq7_1040_1.gif

A. bandpass filter
B. high-pass filter
C. low-pass filter
D. differentiator

Answer: Option B

Explanation:

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9. 

After which time constant can a capacitor be considered to be fully charged?

A. first
B. third
C. fifth
D. seventh

Answer: Option C

Explanation:

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10. 

You could increase the time constant of an RC circuit by

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

Answer: Option B

Explanation:

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