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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. The dry cell is what method for creating potential energy?
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Chemical action
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Alternating current

2. How do static charges distribute themselves?
Opposes any change in the current flowing in a circuit
Cells can be connected together to make a battery
Gauge number
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

3. What is the measure of potential difference?
1/1000th of an inch
Potential difference
Volts
Tolerence

4. What is the relationship between magnetism and electricity?
15 -000 ohms - 20%
Electrical resistance against the flow of current
Heat
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)

5. What does a moving charge produce?
A magnetic field
--^V^V^V^---
By their covering
Insulation resistance

6. What is the fundamental property of insulators?
Insulation resistance
Insulation resistance and Dielectric strength(Both A and B)
Wire splices
Does not move

7. What is the term used when a magnetic field produced by coil 1 created a current in coil 2?
Mutual induction
Composition of the resistor
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
By their covering

8. What is the unit of measurement of electrical current?
Amperes
Alternating current
Series circuit
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

9. What is the name for electrical resistance of insulation?
First digit is 9
Relay
Insulation resistance
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)

10. What does a third band of brown mean?
How much potential difference can a material withstand before breaking down
Symbol
10
The rate of doing work

11. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?
Choke
Parallel
Volts
Alternating current

12. What information do the Left-Hand Rules provide?
A difference in potential energy
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Insulation resistance
Energy

13. When reading resistance color codes - what does the fourth band indicate?
The direction the negative charge moves
Solenoid and Relay(both A and B)
Moving vehicles
Tolerence

14. How is the heat production measured in a resistor?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
1/1000th of an inch
Potential difference - E*I - current times current change from point to point(all of the above)
A magnetic field

15. What is a wire classification?
Use an effect to produce another effect
Heat and current control(both a and c)
Heat
Bare - covered - insulated - stranded - cable(All of the above)

16. What instrument measures voltage?
Insulation resistance
1/1000th of an inch
From the negative battery terminal to the positive terminal
Voltmeter

17. What does a transformer transform?
The relationship of potential difference to current
Relationship between current and potential difference
DC current
Gauge number

18. What is the term for doing work at the rate of joule per second?
High resistance
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)
1 watt
Fixed - tapped - variable(all of the above)

19. What is an electromagnet?
Potential difference
Cell
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Electromagnetism

20. What is a type of capacitor?
10%
Fixed - Electrolytic - Variable(all of the above)
Opposition to movement of free electrons
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

21. What is the purpose of capacitors in electrical circuits?
Stores electrical charge
Mutual induction
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

22. How many kinds of poles do magnets have?
Wire splices
Parallel circuit
Two
Magnetic properties

23. How is capacitance determined?
Ohms
Relay
Area and spacing of capacitor - static current in the capacitor(both A and B)
Alternating current

24. Which of the following materials is NOT a good conductor?
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
High resistance
Porcelain
Voltmeter

25. 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
75 Ohms
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
First digit is 9

26. What is true about a dry cell?
Opposition to movement of free electrons
A magnetic field
12 volts
Common - not rechargable - gradually discharges when in storage(All of the above)

27. What is a type of mechanical transducer?
Start with the band on the end and read to the center
Porcelain
Insulation resistance
Solenoid and Relay(both A and B)

28. What is an arrangement of materials that create a potential difference by chemistry?
A difference in potential energy
--^V^V^V^---
Cell
Plastic - Rubber - Friction(all of the above)

29. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?
Use an effect to produce another effect
Parallel
Voltmeter
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)

30. What is the term for two or more cells attached together?
Mutual induction
Relationship between current and potential difference
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Battery

31. What is dielectric strength?
How much potential difference can a material withstand before breaking down
DC flows continuously in one direction and AC potential difference and current both change direction
Common - not rechargable - gradually discharges when in storage(All of the above)
The direction the negative charge moves

32. What is induction?
Heat
Energy
Current change in a coil creates a magnetic change
Common - not rechargable - gradually discharges when in storage(All of the above)

33. What makes electrons flow?
Potential difference
High resistance
Bonding and grounding
15 -000 ohms - 20%

34. What can permanently break down a capacitor?
Breakdown voltage
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)
Potential difference
Bonding and grounding

35. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?
Unlike poles attract
The rate of doing work
Purging
Potential difference - E*I - current times current change from point to point(all of the above)

36. What is the basic law of magnetic force?
Silver
10
Composition of the resistor
Unlike poles attract

37. What is the relationship between cells and batteries?
--^V^V^V^---
The direction the negative charge moves
Cells can be connected together to make a battery
Alternating current

38. Which material has the lowest resistance at ordinary temperatures?
20%
Relationship between current and potential difference
Resistance increases as the conductor length increases
Silver

39. If the fourth color band is gold - this means the measured value of the resistance is what percent of the marked value?
High resistance
Voltage
5%
A magnetic field

40. What makes electrons flow?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
How much potential difference can a material withstand before breaking down
Breakdown voltage
Potential difference

41. What is a switch that operates by electricity?
Silver
Relay
Wire splices
Unlike poles attract

42. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?
Heat and current control(both a and c)
Serial
The relationship of potential difference to current
15 -000 ohms - 20%

43. What is 'difference in potential(potential difference) - per unit of charge - between two points'?
Symbol
Composition of the resistor
Voltage
Mutual induction

44. What is the difference between AC and DC?
Energy
Opposition to electrical current
Alternating current
DC flows continuously in one direction and AC potential difference and current both change direction

45. When reading resistance color codes - what does the first band indicate?
DC current
Cables
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
First digit

46. If the fourth color band is missing - this means the measured value of the resistance is what percent of the marked value?
20%
Tolerence
A magnetic field
Potential difference - E*I - current times current change from point to point(all of the above)

47. What is a DC circuit characteristic?
Insulation resistance and Dielectric strength(Both A and B)
Volts
Current flows in one direction - potential differences across a load does not change(Both A and B)
Heat and current control(both a and c)

48. Identify the blueprint symbol for capacitors.
Symbol
Wire splices
The direction of the magnetic field
Opposition to electrical current

49. What is the purpose of a raceway?
Relationship between current and potential difference
Unlike poles attract
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Wire splices

50. What type of circuit has two or more paths for current to follow?
Breakdown voltage
Parallel circuit
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
American wire gauge(AWG)

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Basic Electricity

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