Unit 3 Study Guide

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Author:
eschachinger
ID:
101022
Filename:
Unit 3 Study Guide
Updated:
2011-09-11 10:58:58
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Electricity power supplies
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Unit 3 test question study guide
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  1. Which of the following are conductors?
    • Liquids
    • Metals
    • Plastics
  2. Which of the following are insulators?
    • Ceramics
    • Gases
    • Plastics
  3. Which of the following is a derived quantity that you can calculate by multiplying the force of electricity caused by a difference in charge at two locations and the measure of the flow of electrons past a given point?
    Electrical Power
  4. Which of the following is a force that opposes the flow of DC through a conductor?
    Resistance
  5. Which of the following is measured in amps?
    Current
  6. Which of the following is measured in ohms? (Choose all that apply)
    • Impedance
    • Resistance
  7. What is the formula relating voltage, current, and resistance?
    V = i * r
  8. True or False? At a given voltage, current increases as resistance drops.
    True
  9. True or False? You need to be concerned about electrostatic discharge because it can be fatal to humans.
    False
  10. The power requirements of a motherboard are estimated to be which of the following?
    30 Watts
  11. Which of the following require the most power?
    CPU
  12. More devices draw power at what voltage level than any other ranges?
    +12 V
  13. Which of the following is a serial ATA connector?
    A wide black connector
  14. Which color wire is always to the ground?
    Black
  15. How many pins does the ATX v 2.0 connector have?
    24
  16. How many ohms does a multimeter read for a closed circuit, such as a good fuse or good wire?
    0 or Zero

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