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Electricity Notes
Names: _______________________
1. What are three ways
electricity are produced?
2. What is the difference
between a switchyard
and a substation?
3. What are different types
of Service Entrance
Panels?
4. What is electricity?
5. What is the difference between static and dynamic electricity?
6. What is the difference between potential and kinetic energy?
7. How does electricity work?
8. What is a conductor and what are common conductors?
9. What is an insulator and what are common insulators?
10. What is a semiconductor and what is a common semiconductor?
11. What are volts?
12. What is the difference between Direct Current & Alternating Current?
13. What are examples of different levels of AC?
14. Write the name of the following receptacles:
15. What is current and how is it measured?
16. What is resistance and how is it measured?
17. What is Power and how is it calculated?
18. 1000 Watts = ____________________
19. How many kilowatts are 2,000 watts?
20. How many kilowatts are 4,500 watts?
21. How many kilowatts are 125,000 watts?
22. How many watts are 7 kilowatts?
23. How many watts are 4.2 kilowatts?
24. Assume you have three 300 watt light bulbs outside your house and you turn the lights on
at 9 p.m. and shut them off the next morning at 7 a.m. How much will it cost you to run
those lights?
25. 5000 watt clothes dryer will dry a load of clothes in one hour. How much does it cost to
run the dryer?
26. A football field has 36 lights that are rated at 500 watts. The coach turns them on at 5:00
p.m. and shuts them off after the game at 10:00p.m. How much will it cost?
27. What is Ohm’s Law and how is it calculated?
28. 1000 Ohms = ________________________
29. How many ohms are in 1.25 k?
30. How many ohms are in 2.60 k?
31. How many k are in 1400 ohms?
Applying Ohm’s Law and the Power Formula (Page 505)
1)
2)
3)
4)
5)
6)
32. What do the following wire colors represent:
Black / Red –
White –
Green / Bare –
33. What is romex?
34. What do the following wires mean:
12-2
12-2w/g
12-3
35. Explain what wire connects to each of the following screws:
Silver –
Gold –
Green –
36. What is the difference between a series circuit and a parallel circuit?
37. Explain what the following tools are used for:
Voltmeter –
Ammeter –
Multimeter –
Review Questions:
1. Explain the difference between static electricity and dynamic electricity.
2. Explain the difference between potential energy and kinetic energy.
3. Explain the difference between DC voltage and AC voltage.
4. What is the most common type of voltage used to produce work?
5. What is resistance (R) in an electrical circuit?
6. How is the amount of power (P) produced in an electrical system determined?
7. Explain the difference between single-phase AC voltage and three-phase AC voltage.
8. List the ranges of low, medium, and high voltage.
9. What is the difference between an analog and digital multimeter (DMM)?