Chapter 4: Resistance
MULTIPLE CHOICE
1. ____ resistors are used in high-current circuits where precision is necessary.
a.
Wirewound
c.
Film
b.
Molded carbon composition
d.
Surface-mount
2. ____ resistors offer small size with high accuracy.
a.
Wirewound
c.
Film
b.
Molded carbon composition
d.
Surface-mount
3. In most electronic circuits, resistors of ____ tolerance are satisfactory.
a.
2%
c.
10%
b.
5%
d.
20%
4. A variable resistor used to control voltage is called a ____.
a.
wirewound
c.
potentiometer
b.
tin oxide
d.
rheostat
5. A variable resistor used to control current is called a ____.
a.
wirewound
c.
potentiometer
b.
tin oxide
d.
rheostat
6. The ____ band indicates the reliability of the resistor.
a.
second
c.
fourth
b.
third
d.
fifth
7. The ____ band represents the tolerance of the resistor.
a.
first
c.
third
b.
second
d.
fourth
8. If there is only one path for current to flow between two points in a circuit, the circuit is a ____ circuit.
a.
series
c.
series-parallel
b.
parallel
d.
resistive
9. If there is more than one path for current to flow between two points in a circuit with two or more
resistors, the circuit is a ____ circuit.
a.
series
c.
series-parallel
b.
parallel
d.
resistive
10. In a ____ circuit, the total resistance is always less than the resistance of any branch.
a.
series
c.
series-parallel
b.
parallel
d.
resistive
COMPLETION
1. In an electric circuit, the larger the diameter of the wire, the ____________________ the electrical
resistance to current flow.
2. ____________________ is the ability of a material to pass electrons.
3. A resistor’s ____________________ is the amount that the resistor may vary and still be acceptable.
SHORT ANSWER
1. Describe how temperature affects the resistance of an electrical conductor.
2. In a color-coded strip system, describe the two instances where the third band does not mean the
number of zeros.
0.1. For resistor values of less than 1 ohm, the third band is silver. This means the first two digits are
multiplied by 0.01.
