Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.


1.

When
a capacitor becomes charged, the plate with the lack of electrons has a ____ charge. a.  neutral  b.  negative  c.  positive   


2.

A
U.S. military study showed that a capacitor operated at onehalf its rated voltage will have a life
span about ____ times longer than a capacitor operated at its rated voltage.


3.

The
basic unit of capacitance is the ____. a.  coulomb  c.  impedance  b.  henry  d.  farad     


4.

Connecting capacitors in series has the effect of increasing the distance between the
plates, which ____ the total capacitance of the circuit. a.  increases  c.  shorts
out  b.  reduces  d.  none of the
above     


5.

When
a capacitor is connected in a circuit with a resistor, the amount of time needed to charge the
capacitor is called the ____ time constant.


6.

The
advantage of ____ is that they can have very high capacitance in a small case. a.  RL
capacitors  b.  dielectric constants  c.  electrolytic   


7.

Reversing the polarity of a ____type electrolytic capacitor will permanently damage
the capacitor. a.  nonpolarized  c.  dry  b.  wet  d.  dielectric     


8.

Variable capacitors are generally rated in ____. a.  microfarads  c.  megafarads  b.  millifarads  d.  picofarads     


9.

Capacitive reactance is measured in ____. a.  watts  c.  amps  b.  volts  d.  ohms     


10.

In a
pure capacitive circuit, the current ____. a.  leads the applied voltage by 90
degrees  b.  lags the applied voltage by 90
degrees  c.  lags the applied voltage by 180
degrees  d.  is in phase with the applied voltage   
