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1.  What are the positive and negative charged particles in an atom?

2.  What force keeps the electrons of an atom revolving in regular orbits?

3.  How is electricity conveyed?

4.  Answer BOTH of these questions in the space below:

A)  What substances are the best conductors of electricity?

B)  Why?

5.  What is an insulator?

6.  What is the fundamental law concerning electrical charges?

7.  What unit is used to measure electromotive force?

8.  What are the six common methods of producing voltage?

9.  What is a thermocouple?

10.  Where is the photoelectric cell used?

11.  What is the most common source of chemically created electricity?

12.  What is the unit of measure for current?

13.  What is the unit of measure for resistance?

14.  What factors determine the amount of resistance in a conductor?

15.  What is an electrical circuit?

16.  How does electricity flow in a circuit?

17.  What is a schematic diagram?

18.  Answer BOTH of these questions in the space below:

A)  Describe Ohm's law.

B)  What does it enable us to find?

19.  What is the unit of measure for power?

20.  What are the three formulas for electrical power?