Electrical Engineering - Capacitors

Exercise :: Capacitors - General Questions

21. 

Two 0.68 F capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is

A. 46.8
B. 4.68
C. 23.41
D. 11.70

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

22. 

An uncharged capacitor and a 1 k resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is

A. 6 V
B. 3 V
C. 2 V
D. 0 V

Answer: Option D

Explanation:

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23. 

When the voltage across a capacitor is tripled, the stored charge

A. triples
B. is cut to one-third
C. stays the same
D. doubles

Answer: Option A

Explanation:

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