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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 makes electrons flow?
Potential difference
10%
Magnetic properties
Ability to store an electric charge

2. What is the measure of potential difference?
Purging
Resistance value can not be changed
Volts
Stores electrical charge

3. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?
Alternating current
Electromagnetic field
Fixed - tapped - variable(all of the above)
Purging

4. What is a common measure of wire diameter?
Battery
Stores electrical charge
Gauge number
Electromagnetism

5. If the fourth color band is silver - this means the measured value of the resistance is what percent of the marked value?
10%
Tolerence
A magnetic field
Breakdown voltage

6. What type of circuit has two or more paths for current to follow?
Opposition to electrical current
Solenoid and Relay(both A and B)
Parallel circuit
Stores electrical charge

7. How is the heat production measured in a resistor?
Insulation resistance
Gauge number
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

8. What is a conductor?
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
50 Ohms
Area and spacing of capacitor - static current in the capacitor(both A and B)
Electromagnetic field

9. What is the purpose of a raceway?
Potential difference - E*I - current times current change from point to point(all of the above)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)

10. What is resistance in electrical terms?
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)
Opposition to electrical current
20%
Choke

11. What is the name for electrical resistance of insulation?
The direction the negative charge moves
Insulation resistance
Cell
Does not move

12. What is needed for electric heating elements and the filaments of light bulbs?
--^V^V^V^---
High resistance
Chemical action
20%

13. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?
Potential difference
Moving vehicles
Alternating current
DC flows continuously in one direction and AC potential difference and current both change direction

14. What is capacitance in electrical terms?
Ability to store an electric charge
Circular and square mills(Both A and B)
High resistance
12 volts

15. What does a third band of brown mean?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Potential difference
Produce heat - light - or limit current to control it(all of the above)
10

16. When reading resistance color codes - what does the fourth band indicate?
Tolerence
The relationship of potential difference to current
Ability to store an electric charge
Area and spacing of capacitor - static current in the capacitor(both A and B)

17. How many kinds of poles do magnets have?
Wire splices
Insulation resistance and Dielectric strength(Both A and B)
Bare - covered - insulated - stranded - cable(All of the above)
Two

18. Identify the blueprint symbol for resistors.
--^V^V^V^---
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
Heat
Relay

19. What are the names of two of the six primary methods of producing a voltage?
Does not move
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
Purging
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)

20. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?
Parallel
Secondary cell
Porcelain
Area and spacing of capacitor - static current in the capacitor(both A and B)

21. What is a type of capacitor?
Moving vehicles
12 volts
Common - not rechargable - gradually discharges when in storage(All of the above)
Fixed - Electrolytic - Variable(all of the above)

22. What instrument measures voltage?
Voltmeter
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
Grounding wire
Ability to store an electric charge

23. What is induction?
Choke
Opposition to electrical current
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Current change in a coil creates a magnetic change

24. What types of protective tapes are used?
The direction the negative charge moves
Plastic - Rubber - Friction(all of the above)
1/1000th of an inch
Battery

25. What is the use of the electromagnet?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
A magnetic field
Insulation resistance

26. What determines the resistance of a resistor?
Resistance value can not be changed
Purging
Composition of the resistor
A difference in potential energy

27. What is the relationship between cells and batteries?
Cells can be connected together to make a battery
Unlike poles attract
Current flows in one direction - potential differences across a load does not change(Both A and B)
Cables

28. What is resistance?
Battery
5%
Opposition to movement of free electrons
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

29. Identify the general blueprint symbol for inductors.
The direction of the magnetic field
Symbol
Circular and square mills(Both A and B)
Heat and current control(both a and c)

30. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)
Serial
Use an effect to produce another effect
Potential difference

31. What is the basic law of magnetic force?
Electromagnetic field
Unlike poles attract
Ohms
Serial

32. What is the unit of measurement of resistance?
Symbol
Common - not rechargable - gradually discharges when in storage(All of the above)
Ohms
Heat and current control(both a and c)

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
10
Heat and current control(both a and c)
High resistance
12 volts

34. A resistor is color coded brown - green - orange. What is its resistance?
Opposition to electrical current
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
15 -000 ohms - 20%
First digit

35. What does resistance produce?
10
Battery
Heat
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)

36. What makes electrons flow?
Potential difference
Series circuit
Solenoid and Relay(both A and B)
Fixed - Electrolytic - Variable(all of the above)

37. Identify the blueprint symbol for capacitors.
Stranded
Symbol
Common - not rechargable - gradually discharges when in storage(All of the above)
Use an effect to produce another effect

38. Which way is the current going in the circuit shown?(electron flow)
Mutual induction
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
From the negative battery terminal to the positive terminal
Electromagnetic field

39. Which of the following is a type of resistor?
Porcelain
Fixed - tapped - variable(all of the above)
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Purging

40. What is true about a dry cell?
Potential difference - E*I - current times current change from point to point(all of the above)
Heat
Amperes
Common - not rechargable - gradually discharges when in storage(All of the above)

41. What is a property of inductors in electrical circuits?
Parallel
Solenoid and Relay(both A and B)
Fixed - tapped - variable(all of the above)
Opposes any change in the current flowing in a circuit

42. What is the fundamental property of insulators?
Plastic - Rubber - Friction(all of the above)
Moving vehicles
Insulation resistance and Dielectric strength(Both A and B)
20%

43. What results when current is run through a material with high resistance?
Symbol
Composition of the resistor
Produce heat - light - or limit current to control it(all of the above)
Heat and current control(both a and c)

44. How do static charges distribute themselves?
Mutual induction
How much potential difference can a material withstand before breaking down
20%
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

45. What does a transformer transform?
10
The relationship of potential difference to current
Insulation resistance
Magnetic properties

46. What is another name for an inductor?
Choke
Volts
75 Ohms
Plastic - Rubber - Friction(all of the above)

47. What are the two generic methods to eliminate static electricity from metal objects?
Alternating current
Heat
Bonding and grounding
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)

48. What is the term for two or more cells attached together?
Stranded
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Fixed - Electrolytic - Variable(all of the above)
Battery

49. What cannot be transformed to higher or lower potential differences?
Series circuit
1/1000th of an inch
DC current
Common - not rechargable - gradually discharges when in storage(All of the above)

50. What does static electricity do?
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)
Wire splices
Does not move
Common - not rechargable - gradually discharges when in storage(All of the above)