Capacitors Multiple Choice Questions - Set 02 - ObjectiveBooks

Practice Test: Question Set - 02

1. A 4.7 MÎ© resistor is in series with a 0.015 Î¼F 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 Î¼F capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is

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

4. A 10 Î¼F, 20 Î¼F, 22 Î¼F, and 100 Î¼F capacitor are in parallel. The total capacitance is
(A) 2.43 Î¼F
(B) 4.86 Î¼F
(C) 100 Î¼F
(D) 152 Î¼F

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 Î¼F
(B) 0.002 Î¼F
(C) 0.0002 Î¼F
(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 Î¼F 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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