Test your basic knowledge |

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. Where do the fingers point in both Left-Hand Rules?
Fixed - Electrolytic - Variable(all of the above)
Choke
The direction of the magnetic field
Wire splices

2. What type of circuit has one path of follow through a load?
Current change in a coil creates a magnetic change
Series circuit
High resistance
Tolerence

3. What is the basic law of magnetic force?
Potential difference - E*I - current times current change from point to point(all of the above)
Unlike poles attract
Relationship between current and potential difference
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

4. What is voltage?
Current change in a coil creates a magnetic change
1 watt
A difference in potential energy
Opposition to movement of free electrons

5. What is the relationship between magnetism and electricity?
Insulation resistance and Dielectric strength(Both A and B)
10
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)
American wire gauge(AWG)

6. What is the purpose of resistors in electrical circuits?
Use an effect to produce another effect
Heat
Strength of the charge
Produce heat - light - or limit current to control it(all of the above)

7. What is a switch that operates by electricity?
Cell
The rate of doing work
Relay
DC flows continuously in one direction and AC potential difference and current both change direction

8. The generator is what method of creating potential energy?
Use an effect to produce another effect
Electromagnetism
Opposes any change in the current flowing in a circuit
Cells can be connected together to make a battery

9. What does static electricity do?
Composition of the resistor
Grounding wire
Does not move
Opposition to movement of free electrons

10. What is the unit of measurement of electrical current?
Amperes
1 watt
Opposition to movement of free electrons
Series circuit

11. What is a common measure of wire diameter?
Cells can be connected together to make a battery
Porcelain
Gauge number
The relationship of potential difference to current

12. If the fourth color band is silver - this means the measured value of the resistance is what percent of the marked value?
10%
Potential difference - E*I - current times current change from point to point(all of the above)
Amperes
Composition of the resistor

13. What makes electrons flow?
Potential difference
Opposes any change in the current flowing in a circuit
Use an effect to produce another effect
Does not move

14. Which type of cell can be recharged?
Secondary cell
Heat
Energy
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)

15. How many kinds of poles do magnets have?
15 -000 ohms - 20%
75 Ohms
Battery
Two

16. When reading resistance color codes - what does the fourth band indicate?
Electromagnetism
Tolerence
Battery
Heat

17. Identify the blueprint symbol for resistors.
Does not move
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)
The direction of the magnetic field
--^V^V^V^---

18. Why is the transformer important to AC electricity?
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)
Start with the band on the end and read to the center
Plastic - Rubber - Friction(all of the above)

19. Identify the blueprint symbol for capacitors.
Relay
Electrical resistance against the flow of current
Symbol
Two

20. What is another name for an inductor?
Potential difference - E*I - current times current change from point to point(all of the above)
The direction of the magnetic field
The direction the negative charge moves
Choke

21. A resistor is color coded brown - green - orange. What is its resistance?
First digit
Opposition to movement of free electrons
Chemical action
15 -000 ohms - 20%

22. What types of protective tapes are used?
Start with the band on the end and read to the center
Heat
Breakdown voltage
Plastic - Rubber - Friction(all of the above)

23. What is the purpose of a raceway?
Electromagnetism
Parallel
Heat
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)

24. What type of circuit has two or more paths for current to follow?
Serial
Common - not rechargable - gradually discharges when in storage(All of the above)
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
Parallel circuit

25. Which way is the current going in the circuit shown?(electron flow)
From the negative battery terminal to the positive terminal
Symbol
Strength of the charge
Silver

26. What does a third band of brown mean?
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
10
Bare - covered - insulated - stranded - cable(All of the above)
Resistance value can not be changed

27. What is resistance in electrical terms?
Opposition to electrical current
Current change in a coil creates a magnetic change
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Potential difference

28. What is true about a dry cell?
Electromagnetism
Common - not rechargable - gradually discharges when in storage(All of the above)
Does not move
Amperes

29. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?
Porcelain
Gauge number
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Alternating current

30. What is a wire classification?
The relationship of potential difference to current
Use an effect to produce another effect
Area and spacing of capacitor - static current in the capacitor(both A and B)
Bare - covered - insulated - stranded - cable(All of the above)

31. How is capacitance determined?
5%
Area and spacing of capacitor - static current in the capacitor(both A and B)
10
Wire splices

32. What does an object have if a magnetic field acts on it?
50 Ohms
Magnetic properties
Moving vehicles
First digit is 9

33. 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
12 volts
Produce heat - light - or limit current to control it(all of the above)
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Amperes

34. What is a DC circuit characteristic?
--^V^V^V^---
Bonding and grounding
Volts
Current flows in one direction - potential differences across a load does not change(Both A and B)

35. If the fourth color band is missing - this means the measured value of the resistance is what percent of the marked value?
Amperes
Electromagnetism
Series circuit
20%

36. What is a property of inductors in electrical circuits?
1 watt
Common - not rechargable - gradually discharges when in storage(All of the above)
Opposes any change in the current flowing in a circuit
A magnetic field

37. What does resistance produce?
Unlike poles attract
The relationship of potential difference to current
Amperes
Heat

38. What do we call the ability to do work?
10
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Energy
Porcelain

39. Which of the following is a type of resistor?
Potential difference
Mutual induction
Fixed - tapped - variable(all of the above)
The direction the negative charge moves

40. What is the use of the electromagnet?
Porcelain
Silver
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
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)

41. What is the fundamental property of insulators?
Insulation resistance and Dielectric strength(Both A and B)
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
5%
Strength of the charge

42. What do transducers do in electrical terms?
Two
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Alternating current
Use an effect to produce another effect

43. What is a common form used in conductors?
Insulation resistance and Dielectric strength(Both A and B)
--^V^V^V^---
Alternating current
Cables

44. What determines whether a spark can be produced?
First digit
Strength of the charge
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
1 watt

45. What is a characteristic of a fixed resistor?
Insulation resistance
Resistance value can not be changed
Opposes any change in the current flowing in a circuit
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)

46. What wire measurement is commonly used in the U.S.?
American wire gauge(AWG)
The rate of doing work
--^V^V^V^---
Fixed - Electrolytic - Variable(all of the above)

47. What can permanently break down a capacitor?
Breakdown voltage
Ohms
50 Ohms
Area and spacing of capacitor - static current in the capacitor(both A and B)

48. In most applications - what remains constant if the current remains constant and flows in one direction?
Battery
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Electromagnetic field
From the negative battery terminal to the positive terminal

49. What are the names of two of the six primary methods of producing a voltage?
1 watt
Opposition to electrical current
Bonding and grounding
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)

50. What is the term for two or more cells attached together?
Battery
Electrical resistance against the flow of current
Serial
The rate of doing work

Test your basic knowledge |

Basic Electricity

13 Skills Types | 550 Pages | Only $9.95 | PDF / EPub, Kindle Ready

Top Scores

Link to This Test

Related Subjects