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  • Question
  • Adding 27.5 × 103 to 8.9 × 104 equals


  • Options
  • A. 36.4 × 107
  • B. 116.5 × 104
  • C. 28.39 × 103
  • D. 1.165 × 105

  • Correct Answer
  • 1.165 × 105 


  • Quantities and Units problems


    Search Results


    • 1. Which of the following metric prefixes could replace 10?9?

    • Options
    • A. Nano
    • B. Mega
    • C. Kilo
    • D. Micro
    • Discuss
    • 2. The digits in a measured number that are known to be correct are called

    • Options
    • A. accuracy digits
    • B. significant digits
    • C. error digits
    • D. precision digits
    • Discuss
    • 3. Scientific notation is a method

    • Options
    • 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
    • Discuss
    • 4. The number 14.8 can also be expressed as

    • Options
    • A. 1.48 × 10?1
    • B. 1.48 × 100
    • C. 1.48 × 101
    • D. 1.48 × 102
    • Discuss
    • 5. When using the terms "accuracy" and "precision" for measurements

    • Options
    • A. "precision" implies less measurement error than "accuracy"
    • B. "accuracy" implies less measurement error than "precision"
    • C. "precision" measures the repeatability of a measurement
    • D. both terms mean the same thing
    • Discuss
    • 6. 7200 mV is the same as

    • Options
    • A. 7.2 µV
    • B. 7.2 V
    • C. 7,200,000 V
    • D. 0.0072 µV
    • Discuss
    • 7. The difference between scientific and engineering notation is

    • Options
    • A. powers of ten representation
    • B. single vs. multiple digits before decimal point
    • C. groupings of multiples of three digits
    • D. All of the above
    • Discuss
    • 8. Derived units are obtained from various combinations of

    • Options
    • A. electrical quantities
    • B. fundamental units
    • C. metric prefixes
    • D. international standards
    • Discuss
    • 9. Add 21 mA and 8000 µA and express the result in milliamperes.

    • Options
    • A. 21.8 mA
    • B. 218 mA
    • C. 29 mA
    • D. 290 mA
    • Discuss
    • 10. The unit for frequency is the

    • Options
    • A. hertz
    • B. ampere
    • C. watt
    • D. second
    • Discuss


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