Q.1
A 0.F capacitor equals how many micro-farads?
  • 22 µF
  • 220 µF
  • 2,200 µF
  • 22,200 µF
Q.2
Two series capacitors (one 2 µF, the other of unknown value) are charged from aV source. The 2 µF capacitor is charged toV and the other to 8 V. The value of the unknown capacitor is
  • 1 µF
  • 2 µF
  • 4 µF
  • 8 µF
Q.3
The ohm is the unit of capacitance.
  • True
  • False
Q.4
Four 0.µF capacitors are in parallel. The total capacitance is
  • 0.15 µF
  • 0.30 µF
  • 0.6 µF
  • 0.8 µF
Q.5
AµF,µF,µF, andµF capacitor are in parallel. The total capacitance is
  • 2.43 µF
  • 4.86 µF
  • 100 µF
  • 152 µF
Q.6
A 4.7 MΩ resistor is in series with a 0.µF capacitor. The combination is across aV source. How long does it take the capacitor to fully charge?
  • 35 ms
  • 352 ms
  • 3.5 ms
  • 70.5 ms
Q.7
AΩ resistor is in series with a 2.2 µF capacitor. The time constant is
  • 48 µs
  • 480 µs
  • 2.42 µs
  • 24 µs
Q.8
Of the following capacitors, which one has the highest dielectric constant?
  • Air
  • Mica
  • Glass
  • Paper
Q.9
Total parallel capacitance is less than that of the smallest capacitor in parallel.
  • True
  • False
Q.10
An uncharged capacitor and a 1 kΩ 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
  • 2 V
  • 0 V
Q.11
Capacitance is directly proportional to plate area and plate separation.
  • True
  • False
Q.12
XC is inversely proportional to frequency and capacitance.
  • True
  • False
Q.13
Energy is stored by a capacitor in a magnetic field.
  • True
  • False
Q.14
A 0.µF capacitor equals how many picofarads?
  • 100 pF
  • 1,000 pF
  • 10,000 pF
  • 100,000 pF
Q.15
The dielectric constant is the ability of a material to establish an electric field.
  • True
  • False
Q.16
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased
  • VR > VC
  • VC > VR
  • VR = VC
  • VR and VC = 0
Q.17
When the voltage across a capacitor is tripled, the stored charge
  • Triples
  • Is cut to one-third
  • Stays the same
  • Doubles
Q.18
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current
  • Increases
  • Remains constant
  • Decreases
  • Ceases
Q.19
Which of the following capacitors is polarized?
  • Mica
  • Ceramic
  • Plastic-film
  • Electrolytic
Q.20
A 2 µF, a 4 µF, and aµF capacitor are connected in series. The total capacitance is less than
  • 2 µF
  • 4 µF
  • 10 µF
  • 1.5 µF
0 h : 0 m : 1 s