Exercise: Quantities And Units

Questions for: Quantities And Units

A measure of the repeatability of a measurement of some quantity is
A:
error
B:
precision
C:
accuracy
D:
significant
Answer: B
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7200 mV is the same as
A:
7.2 mu.gifV
B:
7.2 V
C:
7,200,000 V
D:
0.0072 mu.gifV
Answer: B
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If you drop a 5 when rounding a number, you are using the
A:
round-to-even rule
B:
significant digit rule
C:
round-off rule
D:
retained digit rule
Answer: A
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Scientific notation is a method
A:
of expressing a very large number
B:
of expressing a very small number
C:
used to make calculations with large and small numbers
D:
All of the above
Answer: D
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Which of the following metric prefixes could replace 10–9?
A:
Nano
B:
Mega
C:
Kilo
D:
Micro
Answer: A
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