Name: 
 

Chapter 15



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 one-half its rated voltage will have a life span about ____ times longer than a capacitor operated at its rated voltage.
a.
4
c.
8
b.
6
d.
10
 

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.
a.
RC
c.
TAU
b.
TC
d.
CT
 

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
 



 
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