# Capacitors

• ## 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
Explanation:

No answer description available for this question

• ## Energy is stored by a capacitor in a magnetic field.

• A. True
• B. False
Explanation:

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• ## A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current_____.

• A. Increases
• B. Remains constant
• C. Decreases
• D. Ceases
Explanation:

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• ## Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is_____.

• A. 1 µF
• B. 2 µF
• C. 4 µF
• D. 8 µF
Explanation:

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• ## A capacitor of 2,000 pF is greater than_____.

• A. 0.02 µF
• B. 0.002 µF
• C. 0.0002 µF
• D. 0.0000002 F
Explanation:

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• ## A capacitor of 0.02 µF is larger than_____.

• A. 0.000020 F
• B. 200,000 pF
• C. 2,000 pF
• D. All of the above
Explanation:

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• ## Of the following capacitors, which one has the highest dielectric constant?

• A. Air
• B. Mica
• C. Glass
• D. Paper
Explanation:

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• ## A 220 Ω resistor is in series with a 2.2 µF capacitor. The time constant is_____.

• A. 48 µs
• B. 480 µs
• C. 2.42 µs
• D. 24 µs
Explanation:

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• ## XC is inversely proportional to frequency and capacitance.

• A. True
• B. False
Explanation:

No answer description available for this question

• A. True
• B. False