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Home Electronics Quantities and Units Comments

  • Question
  • The number 24.5, rounded to two significant digits, is 25.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 


  • Quantities and Units problems


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    • 1. The number 560,000 is expressed in scientific notation.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. The metric prefix giga is used to represent one billion.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. 4200 W is the same as 4.2 kW.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. Precision refers to the difference between the measured value and the accepted value.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. 0.00015 V can be expressed in powers of ten as 1.5 × 10?4 V.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. The joule is the unit for ___.

    • Options
    • A. energy
    • B. charge
    • C. time
    • D. frequency
    • Discuss
    • 7. 106,100,000 Hz is the same as ___ MHz.

    • Options
    • A. 106.1
    • B. 1,061
    • C. 10,610
    • D. 106,100
    • Discuss
    • 8. (12.6 × 106)(10.5 × 103) = ________.

    • Options
    • A. 13.2 × 1012
    • B. 1.32 × 1012
    • C. 1.32 × 1011
    • D. 13.2 × 1011
    • Discuss
    • 9. The number 0.0136 equals 13.6 × ___.

    • Options
    • A. 10?1
    • B. 10?2
    • C. 10?3
    • D. 10?4
    • Discuss
    • 10. 1300 × 10?12 F is the same as 1300 ___.

    • Options
    • A. mF
    • B. µF
    • C. nF
    • D. pF
    • Discuss


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