d. Thevenin voltage
12. A solder bridge
@a. may produce a short
b. may cause an open
c. is useful in some circuits
d. always has high resistance
13. A cold-solder joint
a. shows good soldering technique
@b. usually produces an open
c. is sometimes useful
d. always has low resistance
14. An open resistor has
a. Infinite current through it
b. Zero voltage across it
c. Infinite voltage across it
@d. Zero current through it
15. A shorted resistor has
a. Infinite current through it
@b. Zero voltage across it
c. Infinite voltage across it
d. Zero current through it
16. An ideal voltage source and an internal resistance is
an example of the
a. Ideal approximation
@b. Second approximation
c. Higher approximation
d. Exact model
17. Treating a connecting wire as a conductor with zero
resistance is an example of the
@a. Ideal approximation
b. Second approximation
c. Higher approximation
d. Exact model
18. The voltage out of an ideal voltage source
a. Is zero
@b. Is constant
c. Depends on the value of load resistance
d. Depends on the internal resistance
19. The current out of an ideal current source
a. Is zero
@b. Is constant
c. Depends on the value of load resistance
d. Depends on the internal resistance
20. Thevenin’s theorem replaces a complicated circuit
facing a load by an
a. Ideal voltage source and parallel resistor
b. Ideal current source and parallel resistor
@c. Ideal voltage source and series resistor
d. Ideal current source and series resistor
21. Norton’s theorem replaces a complicated circuit
facing a load by an
a. Ideal voltage source and parallel resistor
@b. Ideal current source and parallel resistor
c. Ideal voltage source and series resistor
d. Ideal current source and series resistor
22. One way to short a device is
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