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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