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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 type of circuit has two or more paths for current to follow?
Plastic - Rubber - Friction(all of the above)
Parallel circuit
Symbol
Stranded

2. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.
50 Ohms
Bonding and grounding
Insulation resistance and Dielectric strength(Both A and B)
Cell

3. What is true about a dry cell?
Common - not rechargable - gradually discharges when in storage(All of the above)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Choke
Potential difference

4. What is resistance in electrical terms?
Opposition to electrical current
Chemical action
Magnetic properties
Electromagnetism

5. What is a characteristic of insulators?
DC flows continuously in one direction and AC potential difference and current both change direction
Purging
First digit
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)

6. What is a property of inductors in electrical circuits?
Composition of the resistor
Opposes any change in the current flowing in a circuit
Volts
Heat

7. What is the name for electrical resistance of insulation?
Insulation resistance
Common - not rechargable - gradually discharges when in storage(All of the above)
Electrical resistance against the flow of current
Two

8. In most applications - what remains constant if the current remains constant and flows in one direction?
Electromagnetic field
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
The direction of the magnetic field
Strength of the charge

9. The generator is what method of creating potential energy?
Heat
Opposes any change in the current flowing in a circuit
Voltage
Electromagnetism

10. What is a wire classification?
American wire gauge(AWG)
Produce heat - light - or limit current to control it(all of the above)
Bare - covered - insulated - stranded - cable(All of the above)
Heat

11. What instrument measures voltage?
Does not move
American wire gauge(AWG)
Voltmeter
Ohms

12. 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
Volts
Magnetic properties
Potential difference - E*I - current times current change from point to point(all of the above)
12 volts

13. Which of the following is a type of resistor?
DC flows continuously in one direction and AC potential difference and current both change direction
Relay
Fixed - tapped - variable(all of the above)
75 Ohms

14. What are the common units of measurement for round and square conductor cross - sections?
Tolerence
Relationship between current and potential difference
Relay
Circular and square mills(Both A and B)

15. How do static charges distribute themselves?
1 watt
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
Choke
Stores electrical charge

16. What is a type of mechanical transducer?
Solenoid and Relay(both A and B)
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Cell

17. What type of circuit has one path of follow through a load?
Series circuit
Opposes any change in the current flowing in a circuit
Breakdown voltage
5%

18. Identify the blueprint symbol for capacitors.
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)
--^V^V^V^---
Symbol
Mutual induction

19. Where does the thumb point in both Left-Hand Rules?
The direction the negative charge moves
Opposition to electrical current
50 Ohms
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)

20. What do we call the ability to do work?
Heat and current control(both a and c)
Voltmeter
Energy
Potential difference - E*I - current times current change from point to point(all of the above)

21. What is dielectric strength?
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)
How much potential difference can a material withstand before breaking down
The direction the negative charge moves
Energy

22. What is resistance?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Common - not rechargable - gradually discharges when in storage(All of the above)
Opposition to movement of free electrons
Insulation resistance and Dielectric strength(Both A and B)

23. What do electrical charges need to cause a fire or explosion?
Current change in a coil creates a magnetic change
Unlike poles attract
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Ability to store an electric charge

24. What is the relationship between cells and batteries?
Cells can be connected together to make a battery
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Tolerence
Potential difference

25. Which type of cell can be recharged?
Secondary cell
Solenoid and Relay(both A and B)
Two
Amperes

26. What is the purpose of resistors in electrical circuits?
Current flows in one direction - potential differences across a load does not change(Both A and B)
Produce heat - light - or limit current to control it(all of the above)
Choke
Heat

27. How is capacitance determined?
Heat
Area and spacing of capacitor - static current in the capacitor(both A and B)
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Gauge number

28. What do transducers do in electrical terms?
Grounding wire
Use an effect to produce another effect
Parallel circuit
Strength of the charge

29. What is the relationship of conductor size and length to resistance?
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Resistance increases as the conductor length increases
Bonding and grounding
A magnetic field

30. What is the basic law of magnetic force?
Grounding wire
Unlike poles attract
50 Ohms
Fixed - Electrolytic - Variable(all of the above)

31. When reading resistance color codes - what does the first band indicate?
Voltage
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
First digit
Opposition to electrical current

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

33. Why is the transformer important to AC electricity?

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34. What makes electrons flow?
Ohms
Potential difference
Fixed - Electrolytic - Variable(all of the above)
10

35. What is the measure of potential difference?
Bare - covered - insulated - stranded - cable(All of the above)
75 Ohms
Volts
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)

36. What is induction?
Parallel circuit
Current change in a coil creates a magnetic change
Bonding and grounding
The rate of doing work

37. What is a common cause of static electricity in a shop?
Electrical resistance against the flow of current
Wire splices
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Moving vehicles

38. What information do the Left-Hand Rules provide?
Ohms
Alternating current
Serial
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)

39. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?
Insulation resistance
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)
Alternating current
Battery

40. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?
First digit
Composition of the resistor
Fixed - tapped - variable(all of the above)
Purging

41. What is the unit of measurement of resistance?
A difference in potential energy
Use an effect to produce another effect
--^V^V^V^---
Ohms

42. Which of the following materials is NOT a good conductor?
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Cells can be connected together to make a battery
Stranded
Porcelain

43. What is 'difference in potential(potential difference) - per unit of charge - between two points'?
Voltage
The direction of the magnetic field
Heat
How much potential difference can a material withstand before breaking down

44. What is the term used when a magnetic field produced by coil 1 created a current in coil 2?
Bare - covered - insulated - stranded - cable(All of the above)
Ohms
Mutual induction
Opposes any change in the current flowing in a circuit

45. What is an electromagnet?
Electrical resistance against the flow of current
Common - not rechargable - gradually discharges when in storage(All of the above)
Symbol
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

46. What is the fundamental property of insulators?
Moving vehicles
Insulation resistance and Dielectric strength(Both A and B)
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)
15 -000 ohms - 20%

47. How is the heat production measured in a resistor?
Tolerence
First digit
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)
Potential difference - E*I - current times current change from point to point(all of the above)

48. What is the term for doing work at the rate of joule per second?
Alternating current
10
Symbol
1 watt

49. What is the unit of measurement of potential difference?
--^V^V^V^---
Chemical action
Volts
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

50. What does a third band of brown mean?
Volts
Gauge number
10
From the negative battery terminal to the positive terminal