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Capacitors

Capacitors
A 0.47 μF capacitor is across a 2 kHz sine wave signal source. The capacitive reactance is

0.000169 Ω
1.7 Ω
17 Ω
170 Ω

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Capacitors
A 4.7 M Ω resistor is in series with a 0.015 μ F capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?

352 ms
3.5 s
70.5 ms
35 ms

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Capacitors
Four 0.15 μF capacitors are in parallel. The total capacitance is

0.30 μF
0.15 μF
0.8 μF
0.6 μF

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Capacitors
An uncharged capacitor and a 1 k Ω 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

6 V
3 V
0 V
2 V

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

480 μs
48 μs
2.42 μs
24 μs

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Capacitors
A 0.01 F capacitor equals how many picofarads?

100,000 pF
1,000 pF
10,000 pF
100 pF

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