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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 is a type of capacitor?
Secondary cell
Stranded
Fixed - Electrolytic - Variable(all of the above)
Insulation resistance and Dielectric strength(Both A and B)

2. How do static charges distribute themselves?
Magnetic properties
The direction of the magnetic field
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
Does not move

3. How many kinds of poles do magnets have?
First digit
Two
Electrical resistance against the flow of current
The direction of the magnetic field

4. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?
A difference in potential energy
Ability to store an electric charge
Fixed - tapped - variable(all of the above)
Parallel

5. What makes electrons flow?
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Potential difference
A difference in potential energy

6. What is the unit of measurement of resistance?
Ohms
Alternating current
Unlike poles attract
American wire gauge(AWG)

7. What are the names of two of the six primary methods of producing a voltage?
Produce heat - light - or limit current to control it(all of the above)
10%
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
How much potential difference can a material withstand before breaking down

8. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?
Choke
Serial
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Ability to store an electric charge

9. A resistor is color coded brown - green - orange. What is its resistance?
15 -000 ohms - 20%
Opposes any change in the current flowing in a circuit
Symbol
American wire gauge(AWG)

10. If the fourth color band is missing - this means the measured value of the resistance is what percent of the marked value?
DC flows continuously in one direction and AC potential difference and current both change direction
Heat and current control(both a and c)
15 -000 ohms - 20%
20%

11. The dry cell is what method for creating potential energy?
The direction the negative charge moves
By their covering
Chemical action
Serial

12. What is insulation resistance?
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Electrical resistance against the flow of current
Mutual induction
5%

13. How is capacitance determined?
Start with the band on the end and read to the center
Secondary cell
Area and spacing of capacitor - static current in the capacitor(both A and B)
Opposition to movement of free electrons

14. Which type of cell can be recharged?
The rate of doing work
Silver
Cell
Secondary cell

15. What is a rigid metal conduit?
Strength of the charge
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)

16. What is voltage?
Chemical action
A difference in potential energy
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Strength of the charge

17. What is a conductor?
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Breakdown voltage
75 Ohms
Volts

18. Identify the general blueprint symbol for inductors.
Symbol
Opposition to movement of free electrons
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Grounding wire

19. When does a DC circuit oppose current flow?
--^V^V^V^---
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Symbol
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)

20. What is a DC circuit characteristic?
Current flows in one direction - potential differences across a load does not change(Both A and B)
Amperes
The direction the negative charge moves
5%

21. In most applications - what remains constant if the current remains constant and flows in one direction?
Electromagnetic field
20%
Series circuit
5%

22. Which of the following materials is NOT a good conductor?
Porcelain
Voltage
5%
Area and spacing of capacitor - static current in the capacitor(both A and B)

23. What is a property of inductors in electrical circuits?
Fixed - tapped - variable(all of the above)
Opposes any change in the current flowing in a circuit
Potential difference
Two

24. What must be large enough to carry the largest current likely to occur?
A difference in potential energy
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Grounding wire
The direction of the magnetic field

25. What information do the Left-Hand Rules provide?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Fixed - Electrolytic - Variable(all of the above)
Choke
First digit is 9

26. What is resistance in electrical terms?
Opposition to electrical current
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)
Chemical action
Wire splices

27. What does static electricity do?
Porcelain
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Cell
Does not move

28. Which of the following is a type of resistor?
Fixed - tapped - variable(all of the above)
From the negative battery terminal to the positive terminal
Fixed - Electrolytic - Variable(all of the above)
Strength of the charge

29. What do transducers do in electrical terms?
Stranded
20%
Use an effect to produce another effect
Symbol

30. What are the common units of measurement for round and square conductor cross - sections?
By their covering
Chemical action
Does not move
Circular and square mills(Both A and B)

31. What can permanently break down a capacitor?
Tolerence
Stranded
Potential difference
Breakdown voltage

32. What is an arrangement of materials that create a potential difference by chemistry?
First digit
Ohms
Heat and current control(both a and c)
Cell

33. What is the relationship between cells and batteries?
Porcelain
Cells can be connected together to make a battery
Does not move
Insulation resistance

34. What results when current is run through a material with high resistance?
Serial
Secondary cell
Heat and current control(both a and c)
Opposition to movement of free electrons

35. What is induction?
Insulation resistance
Current change in a coil creates a magnetic change
Chemical action
A difference in potential energy

36. Which way is the current going in the circuit shown?(electron flow)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
1/1000th of an inch
1 watt
From the negative battery terminal to the positive terminal

37. What is a characteristic of a fixed resistor?
Current change in a coil creates a magnetic change
Parallel circuit
Resistance value can not be changed
Potential difference - E*I - current times current change from point to point(all of the above)

38. What is the unit of measurement of electrical current?
Amperes
Parallel circuit
Opposes any change in the current flowing in a circuit
15 -000 ohms - 20%

39. When reading resistance color codes - what does the first band indicate?
--^V^V^V^---
Electromagnetism
Purging
First digit

40. What is the type of cable composed of many fine wires?
Bonding and grounding
First digit
Electromagnetic field
Stranded

41. What type of circuit has two or more paths for current to follow?
Relay
1 watt
Parallel circuit
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)

42. What is resistance?
By their covering
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Potential difference
Opposition to movement of free electrons

43. What is the name for electrical resistance of insulation?
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)
Stranded
Insulation resistance
Two

44. What is power?
The rate of doing work
Fixed - tapped - variable(all of the above)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
First digit is 9

45. What is the term used when a magnetic field produced by coil 1 created a current in coil 2?
Potential difference
Mutual induction
1 watt
10%

46. Identify the blueprint symbol for capacitors.
Start with the band on the end and read to the center
Symbol
Fixed - tapped - variable(all of the above)
Serial

47. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?
Composition of the resistor
Cells can be connected together to make a battery
Purging
Bonding and grounding

48. How do you read resistor color codes?
DC current
Start with the band on the end and read to the center
15 -000 ohms - 20%
Potential difference

49. What is the purpose of a raceway?
Heat
Chemical action
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
The direction the negative charge moves

50. What does a third band of brown mean?
10
Two
Cables
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)