Electronics - Capacitors

Exercise :: Capacitors - General Questions

56. 

Which of the following is the reference vector for parallel RC circuits?

A. R
B. I
C. C
D. V

Answer: Option D

Explanation:

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57. 

What do variable capacitors use for dielectric?

A. ceramic, electrolytic, mica, or paper
B. air, ceramic, mica, or plastic
C. ceramic, paper, plastic, or mica
D. mica, ceramic, plastic, or electrolytic

Answer: Option B

Explanation:

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58. 

If a charged capacitor is disconnected from a circuit, it will:

A. immediately discharge
B. recharge
C. remain charged
D. leak the charge

Answer: Option D

Explanation:

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59. 

What is the total current for a 5 MHz, 1 Vac circuit that consists of a 27 pF capacitor and a 1 k resistor connected in parallel?

A. 459 A
B. 647 A
C. 1.31 mA
D. 1.85 mA

Answer: Option C

Explanation:

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60. 

What is the value of a capacitor that can store two coulombs of charge when 500 volts is applied across its plates?

A. 4 F
B. 250 F
C. 4,000 F
D. 250 F

Answer: Option C

Explanation:

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