Capacitors Multiple Choice Questions - Set 02

Practice Test: Question Set - 02


1. A 4.7 MΩ resistor is in series with a 0.015 μF capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?
    (A) 35 ms
    (B) 352 ms
    (C) 3.5 s
    (D) 70.5 ms

2. Two 0.68 μF capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is
    (A) 46.8 Ω
    (B) 4.68 Ω
    (C) 23.41 Ω
    (D) 11.70 Ω

3. Capacitance is directly proportional to plate area and plate separation.
    (A) True
    (B) False

4. A 10 μF, 20 μF, 22 μF, and 100 μF capacitor are in parallel. The total capacitance is
    (A) 2.43 μF
    (B) 4.86 μF
    (C) 100 μF
    (D) 152 μF

5. Voltage leads current by 90° in a capacitor.
    (A) True
    (B) False

6. 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

7. The true power in a capacitor is zero.
    (A) True
    (B) False

8. A 12 kHz voltage is applied to a 0.33 μF capacitor, and 200 mA of rms current is measured. What is the value of the voltage?
    (A) 8 V
    (B) 80 V
    (C) 800 V
    (D) 0.88 V

9. The ohm is the unit of capacitance.
    (A) True
    (B) False

10. When the plate area of a capacitor increases,
    (A) The capacitance increases
    (B) The capacitance decreases
    (C) The capacitance is unaffected
    (D) The voltage it can withstand increases

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