Unformatted text preview: Direct Current 1'29 Self-Review Questions 8. Substances that have very few free electrons are called 9. Substances that have a large number of free electrons are called 10. A directed drift of free electrons is called 11. In an electrical circuit electrons flow from the ______ terminal
of the battery to the __. terminal. 12. A drawing that uses symbols to represent circuit components is
known as a 13. The schematic symbols for four components are shown in Figure
1-17. Identify each one: A. B. C. D. 14. The unit of current is the 33?. >—t|l|— Figure 1-17 ' Id ti th boll.
o-— en fy one sym
C D ...
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- Fall '05