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. What information do the Left-Hand Rules provide?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
A magnetic field
Relay
Plastic - Rubber - Friction(all of the above)

2. Why is the transformer important to AC electricity?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

3. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?
Potential difference
Electrical resistance against the flow of current
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
Parallel

4. The dry cell is what method for creating potential energy?
Chemical action
Voltmeter
Potential difference
Opposes any change in the current flowing in a circuit

5. What is the term for doing work at the rate of joule per second?
How much potential difference can a material withstand before breaking down
Battery
Insulation resistance and Dielectric strength(Both A and B)
1 watt

6. What do transducers do in electrical terms?
Electromagnetism
Use an effect to produce another effect
Produce heat - light - or limit current to control it(all of the above)
Tolerence

7. How is capacitance determined?
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Volts
Area and spacing of capacitor - static current in the capacitor(both A and B)
Heat

8. When reading resistance color codes - what does the fourth band indicate?
Tolerence
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Symbol
Volts

9. What is an arrangement of materials that create a potential difference by chemistry?
Cell
A difference in potential energy
First digit is 9
Voltmeter

10. In most applications - what remains constant if the current remains constant and flows in one direction?
Purging
Heat and current control(both a and c)
Tolerence
Electromagnetic field

11. What can permanently break down a capacitor?
Breakdown voltage
Potential difference - E*I - current times current change from point to point(all of the above)
Solenoid and Relay(both A and B)
Composition of the resistor

12. Identify the blueprint symbol for resistors.
--^V^V^V^---
20%
Unlike poles attract
Volts

13. What is the difference between AC and DC?
Silver
Potential difference - E*I - current times current change from point to point(all of the above)
DC flows continuously in one direction and AC potential difference and current both change direction
Heat and current control(both a and c)

14. What is the measure of potential difference?
A difference in potential energy
Volts
Porcelain
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside

15. The generator is what method of creating potential energy?
Cables
A magnetic field
Electromagnetism
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)

16. What is voltage?
Strength of the charge
50 Ohms
A difference in potential energy
Use an effect to produce another effect

17. What is the basic law of magnetic force?
Unlike poles attract
10
The direction the negative charge moves
Resistance value can not be changed

18. A resistor is color coded brown - green - orange. What is its resistance?
Does not move
Insulation resistance and Dielectric strength(Both A and B)
Two
15 -000 ohms - 20%

19. What is the purpose of a raceway?
Opposition to electrical current
Two
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Serial

20. What is 'difference in potential(potential difference) - per unit of charge - between two points'?
Voltage
Electromagnetism
Porcelain
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)

21. What is a common measure of wire diameter?
Purging
Resistance value can not be changed
Gauge number
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)

22. When does a DC circuit oppose current flow?
Symbol
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)
Symbol
The direction the negative charge moves

23. Which type of cell can be recharged?
Potential difference
Opposition to electrical current
Electromagnetism
Secondary cell

24. What types of protective tapes are used?
Moving vehicles
Heat
75 Ohms
Plastic - Rubber - Friction(all of the above)

25. What is power?
The rate of doing work
15 -000 ohms - 20%
Heat and current control(both a and c)
Battery

26. How do you read resistor color codes?
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Heat
Start with the band on the end and read to the center
Purging

27. What does an object have if a magnetic field acts on it?
Magnetic properties
75 Ohms
15 -000 ohms - 20%
Insulation resistance

28. What does a first band of white mean?
First digit is 9
Current change in a coil creates a magnetic change
Use an effect to produce another effect
Heat and current control(both a and c)

29. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.
12 volts
50 Ohms
A magnetic field
Insulation resistance and Dielectric strength(Both A and B)

30. What is resistance?
Serial
Opposition to movement of free electrons
DC flows continuously in one direction and AC potential difference and current both change direction
--^V^V^V^---

31. The thermocouple uses which method for creating potential energy?
10
Heat
Solenoid and Relay(both A and B)
10%

32. What does a moving charge produce?
Insulation resistance and Dielectric strength(Both A and B)
Cell
Potential difference - E*I - current times current change from point to point(all of the above)
A magnetic field

33. What do junction boxes protect?
Wire splices
Magnetic properties
Current change in a coil creates a magnetic change
Symbol

34. Which way is the current going in the circuit shown?(electron flow)
Unlike poles attract
From the negative battery terminal to the positive terminal
15 -000 ohms - 20%
Wire splices

35. What is a switch that operates by electricity?
Resistance value can not be changed
Relay
Area and spacing of capacitor - static current in the capacitor(both A and B)
Bare - covered - insulated - stranded - cable(All of the above)

36. What is the purpose of resistors in electrical circuits?
First digit
The direction of the magnetic field
Unlike poles attract
Produce heat - light - or limit current to control it(all of the above)

37. What is a wire classification?
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
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)
Unlike poles attract
Bare - covered - insulated - stranded - cable(All of the above)

38. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?
Serial
1 watt
Voltage
Opposition to electrical current

39. What must be large enough to carry the largest current likely to occur?
Strength of the charge
Fixed - Electrolytic - Variable(all of the above)
Cells can be connected together to make a battery
Grounding wire

40. What are the common units of measurement for round and square conductor cross - sections?
Circular and square mills(Both A and B)
Common - not rechargable - gradually discharges when in storage(All of the above)
Potential difference - E*I - current times current change from point to point(all of the above)
Potential difference

41. When reading resistance color codes - what does the first band indicate?
Bare - covered - insulated - stranded - cable(All of the above)
Circular and square mills(Both A and B)
Tolerence
First digit

42. Where does the thumb point in both Left-Hand Rules?
15 -000 ohms - 20%
Opposition to movement of free electrons
Parallel
The direction the negative charge moves

43. What is a way to classify wires and cables?
Voltage
A magnetic field
Relay
By their covering

44. What type of circuit has one path of follow through a load?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Cells can be connected together to make a battery
Circular and square mills(Both A and B)
Series circuit

45. How many kinds of poles do magnets have?
Two
DC flows continuously in one direction and AC potential difference and current both change direction
Breakdown voltage
Opposition to movement of free electrons

46. To what measurement do the conductor mills refer?
American wire gauge(AWG)
Volts
1/1000th of an inch
Plastic - Rubber - Friction(all of the above)

47. What is a common form used in conductors?
Chemical action
Cables
--^V^V^V^---
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)

48. Where do the fingers point in both Left-Hand Rules?
The direction of the magnetic field
Ohms
20%
Voltmeter

49. What are the names of two of the six primary methods of producing a voltage?
Start with the band on the end and read to the center
75 Ohms
Opposes any change in the current flowing in a circuit
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)

50. How do static charges distribute themselves?
75 Ohms
Chemical action
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
American wire gauge(AWG)