Electronics - Capacitors

Exercise :: Capacitors - General Questions

41. 

What is the voltage across a capacitor after being charged from a 100 V source for a period of one time constant?

A. 37.8 V
B. 38 V
C. 63 V
D. 101 V

Answer: Option C

Explanation:

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42. 

What is the dc charging/discharging time constant for the circuit?

A. 294 ps
B. 13.5 ms
C. 21.25 ms
D. 2.16 Gs

Answer: Option C

Explanation:

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43. 

Power stored from the source and then returned to the source is called:

A. apparent power
B. impedance power
C. reactive power
D. true power

Answer: Option C

Explanation:

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44. 

Capacitor value markings are usually:

A. alphanumeric
B. color dabs
C. standard
D. white print

Answer: Option A

Explanation:

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45. 

A source voltage across a capacitor will:

A. lead the current by 90 degrees
B. lead the current by 180 degrees
C. lag the current by 90 degrees
D. lag the current by 180 degrees

Answer: Option C

Explanation:

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