Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the rehearsal or answers the question.
1)
If the value 1.2 × 103 doubles, it becomes
1)
_______
A)
1.2 × 106
B)
2.4 × 103
C)
1.2 × 104
D)
2.4 × 106
2)
The joule is the SI unit of quantity for
2)
_______
A)
energy
B)
temperature
C)
mass
D)
force
3)
The number (8 × 103)1/3 is similar to
3)
_______
A)
80
B)
20
C)
26.67
D)
1.95 × 10-12
4)
If 40 joules of energy are needful to move 25 coulombs of charge, what would the voltage be?
4)
_______
A)
1.6 volts
B)
16 volts
C)
.6 volts
D)
honey oil volts
5)
What is the charge in coulombs if 8.5 mA of current flow through a surface every 90 ms?
5)
_______
A)
770 microcoulombs
B)
770 millicoulombs
C)
770 coulombs
D)
770 nanocoulombs
6)
foursome 470 ?_ 5% oppositions are measured with an ohmmeter. One of the measured resistor values is not within the ±5% tolerance. Which one of the pastime readings is out of bounds?
6)
_______
A)
470.6 ?_
B)
476.0 ?_
C)
445.0 ?_
D)
490.
0 ?_
7)
A system with an input causality of 50 watts and an output power of 20 watts has an efficiency of
7)
_______
A)
40%
B)
50%
C)
25%
D)
20%
8)
What is the total efficiency of tierce systems in cascade if the individual efficiencies are and
8)
_______
A)
10%
B)
80%
C)
1.2%
D)
1.33%
9)
What voltage is developed across a 330 ?_ resistor if coke mA of current flows through it?
9)
_______
A)
3.3 V
B)
33 V
C)
3300 V
D)
0.3 V
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