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Basic Electricity

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What makes electrons flow?
Wire splices
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Plastic - Rubber - Friction(all of the above)
Potential difference

2. What is an arrangement of materials that create a potential difference by chemistry?
Relationship between current and potential difference
Silver
Cell
--^V^V^V^---

3. What is dielectric strength?
Magnetic properties
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Produce heat - light - or limit current to control it(all of the above)
How much potential difference can a material withstand before breaking down

4. What does a moving charge produce?
A magnetic field
75 Ohms
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Electromagnetic field

5. When reading resistance color codes - what does the fourth band indicate?
Tolerence
American wire gauge(AWG)
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Symbol

6. What is the purpose of a raceway?
The rate of doing work
Series circuit
1 watt
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)

7. What is voltage?
A difference in potential energy
Opposes any change in the current flowing in a circuit
Composition of the resistor
Serial

8. What does a third band of brown mean?
10
Secondary cell
Purging
By their covering

9. What is the relationship between magnetism and electricity?
The direction the negative charge moves
A magnetic field
Relationship between current and potential difference
Magnetism produces a field and the field exerts force on a moving charge - every moving electrical charge produces a magnetic field - and the magnetic field is strong when the electrical charge is strong and moves rapidly(all of the above are true)

10. What are the two generic methods to eliminate static electricity from metal objects?
Bonding and grounding
DC flows continuously in one direction and AC potential difference and current both change direction
Ohms
Tolerence

11. How do you read resistor color codes?
The relationship of potential difference to current
It increases or decreases the potential difference of AC electricity - It is effective with almost no loss of power - It's use- cost is very low(All of the above)
Start with the band on the end and read to the center
75 Ohms

12. Which material has the lowest resistance at ordinary temperatures?
Bonding and grounding
15 -000 ohms - 20%
--^V^V^V^---
Silver

13. What type of circuit has two or more paths for current to follow?
Parallel circuit
Alternating current
Cell
First digit is 9

14. What is the term for two or more cells attached together?
Chemical action
Fixed - Electrolytic - Variable(all of the above)
DC flows continuously in one direction and AC potential difference and current both change direction
Battery

15. To what measurement do the conductor mills refer?
DC current
15 -000 ohms - 20%
1/1000th of an inch
Electromagnetic field

16. What determines whether a spark can be produced?
10%
Potential difference
Plastic - Rubber - Friction(all of the above)
Strength of the charge

17. Identify the blueprint symbol for resistors.
Plastic - Rubber - Friction(all of the above)
Circular and square mills(Both A and B)
--^V^V^V^---
Heat and current control(both a and c)

18. What are the names of two of the six primary methods of producing a voltage?
A magnetic field
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
How much potential difference can a material withstand before breaking down
First digit

19. What type of circuit has one path of follow through a load?
Series circuit
Produce heat - light - or limit current to control it(all of the above)
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Wire splices

20. Identify the blueprint symbol for capacitors.
20%
Symbol
Common - not rechargable - gradually discharges when in storage(All of the above)
Gauge number

21. Given R=E / I and the following information - plug in the data and solve the problem for resistance. 1.5 volt walkman battery - 0.02 amps of current
Electromagnetic field
Potential difference
75 Ohms
Common - not rechargable - gradually discharges when in storage(All of the above)

22. The thermocouple uses which method for creating potential energy?
First digit is 9
The rate of doing work
Current flows in one direction - potential differences across a load does not change(Both A and B)
Heat

23. How is the heat production measured in a resistor?
Potential difference - E*I - current times current change from point to point(all of the above)
Insulation resistance
Resistance increases as the conductor length increases
Magnetism produces a field and the field exerts force on a moving charge - every moving electrical charge produces a magnetic field - and the magnetic field is strong when the electrical charge is strong and moves rapidly(all of the above are true)

24. What is a switch that operates by electricity?
Breakdown voltage
Relay
Common - not rechargable - gradually discharges when in storage(All of the above)
Magnetic properties

25. What is the relationship between cells and batteries?
The direction the negative charge moves
The direction of the magnetic field
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Cells can be connected together to make a battery

26. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?
Serial
Stores electrical charge
Symbol
Relay

27. What does a transformer transform?
50 Ohms
Current change in a coil creates a magnetic change
The relationship of potential difference to current
Circular and square mills(Both A and B)

28. What types of protective tapes are used?
Plastic - Rubber - Friction(all of the above)
First digit is 9
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
It increases or decreases the potential difference of AC electricity - It is effective with almost no loss of power - It's use- cost is very low(All of the above)

29. What is the type of cable composed of many fine wires?
Stranded
Voltmeter
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Area and spacing of capacitor - static current in the capacitor(both A and B)

30. What is a type of capacitor?
Composition of the resistor
Fixed - Electrolytic - Variable(all of the above)
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Strength of the charge

31. What is true about a dry cell?
Common - not rechargable - gradually discharges when in storage(All of the above)
Cables
Stores electrical charge
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)

32. What makes electrons flow?
By their covering
Alternating current
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
Potential difference

33. What is a rigid metal conduit?
Unlike poles attract
Circular and square mills(Both A and B)
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
First digit is 9

34. What is the basic law of magnetic force?
Unlike poles attract
Series circuit
Plastic - Rubber - Friction(all of the above)
A difference in potential energy

35. What is a common form used in conductors?
Common - not rechargable - gradually discharges when in storage(All of the above)
Potential difference
Cables
Symbol

36. What is a common measure of wire diameter?
Gauge number
The direction the negative charge moves
Potential difference
It increases or decreases the potential difference of AC electricity - It is effective with almost no loss of power - It's use- cost is very low(All of the above)

37. Why is the transformer important to AC electricity?

38. What is a type of mechanical transducer?
Solenoid and Relay(both A and B)
5%
First digit
Energy

39. What is the fundamental property of insulators?
American wire gauge(AWG)
Produce heat - light - or limit current to control it(all of the above)
Insulation resistance and Dielectric strength(Both A and B)
10%

40. Which way is the current going in the circuit shown?(electron flow)
From the negative battery terminal to the positive terminal
Use an effect to produce another effect
Ability to store an electric charge
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

41. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?
Wire splices
Purging
Fixed - Electrolytic - Variable(all of the above)
Current change in a coil creates a magnetic change

42. What is the name for electrical resistance of insulation?
It increases or decreases the potential difference of AC electricity - It is effective with almost no loss of power - It's use- cost is very low(All of the above)
12 volts
Insulation resistance and Dielectric strength(Both A and B)
Insulation resistance

43. How is capacitance determined?
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
Area and spacing of capacitor - static current in the capacitor(both A and B)
Breakdown voltage
Volts

44. What does Ohm's Law represent?
Parallel circuit
Potential difference
Circular and square mills(Both A and B)
Relationship between current and potential difference

45. What can permanently break down a capacitor?
Resistance increases as the conductor length increases
Cell
Wire splices
Breakdown voltage

46. Given E=I X R and the following information - plug in the data and solve the problem for voltage. 0.015 ohms - 800 amps of current
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Resistance increases as the conductor length increases
Strength of the charge
12 volts

47. How many kinds of poles do magnets have?
Two
High resistance
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Porcelain

48. Identify the general blueprint symbol for inductors.
First digit is 9
Bare - covered - insulated - stranded - cable(All of the above)
Gauge number
Symbol

49. In most applications - what remains constant if the current remains constant and flows in one direction?
Electromagnetic field
Area and spacing of capacitor - static current in the capacitor(both A and B)
Choke
Cell

50. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?
Parallel
Does not move
Silver
Common - not rechargable - gradually discharges when in storage(All of the above)