Electrical Circuits Within Fixed Symbols

1. Where are resistors placed to control voltage and current? Within Tapped Circuits Within Fixed Resistors Within Electrical

Circuits Within Fixed Symbols

2. What is the function of a conductor? To permit no motion of a large number of electrons To

permit no motion oftightly bound electrons To permit the free motion of a large number of electrons To permit the free motion of

tightly bound electrons

3. What is a solenoid? Electromagnetic Switch Single Coil Switch Single-pole,

Double-throw Relay

4. What is an Ohmmeter? A measuring device that measures difference of potential applied to a current A

measuring device that reads resistance in ohms A measuring device that measures resistance in current A measuring device that reads tl

amount of current flowing in a circuit

5. What source is the clamp tester placed around to measure the magnetic field? Voltage

Source Current- carrying Conductor Resistive Load Power Source

6.

7. Eo293 Figure 6-1.

8. Refer to the figure above. What is

the value of R (ohms) in a series circuit if E =50 volts and I= 10 amps? .5 ohms 10 ohms 5 ohms 1 ohm

9.

10. Eo29} Figure

7-1.

11. Refer to the figure above. What is the total power (Pt) ofthis series circuit? 100 watts 200 watts 50 watts 1,000

watts

12.

13. Eo29} Figure 8-1.

14. Refer to the figure above. What is the equivalent resistance of five, 100 Ohm – resistors

connected in parallel? 50 ohms 100 ohms 30 ohms 20 ohms

15. What are the characteristics of magnetic attraction and

repulsion? North poles attract North poles, and South poles attract South poles All poles attract each other Unlike poles attract

each other, and like poles repel each other Strong poles attract, and weak poles repel

16. What term best defines electrical pressure,

difference of potential, or electromotive force? Voltage Resistance Current Power

17. What is the term for the relationship

of voltage (E), current (I), and resistance (R) in a simple electrical circuit? Resistance Law Voltage Law Current Law Ohm?s

Law

18.

19. Eo29} Figure 12-1.

20. Refer to the figure above. What is the value of E (volts) if R = 25 ohms and I= 1 amp? 9

volts 0 volts 250 volts 30 volts

21.

22. Eo29} Figure 13-1.

23. Refer to the figure above. Find the current in a series

circuit when given the following: R1 = 4 ohms, R2 = 5 ohms, R3 = 2 ohms, R4 = 11 ohms, and Et = 88 volts. 4 amps 7 amps 6 amps

amps

24.

25. Eo29} Figure 14-1.

26. Refer to the figure above. In a series-parallel circuit, R1 is in series and R2 and R3 are in

parallel with the source voltage. What is the Rt (total resistance) if given the values of R1 = 10 ohm, R2 = 6 ohms, R3 = 6 ohms? 13

ohms 360 ohms 10 ohms 20 ohms

27.

28. Eo29} Figure 15-1.

29. Refer to the figure above. In a series-parallel circuit, R1 is

in series and R2 and R3 are in parallel with the source voltage. What is It ofthe circuit if given the values of Es = 30 volts, R1 = 8

ohms, R2 = 3 ohms, and R3 = 6 ohms? 30 amps 1.5 amps 3 amps 50 amps

30. Which ofthe following statements best defines a

series electrical circuit? An arrangement of electrical devices connected so that the total current must flow through all devices A

flow of electrons that have more than one path to follow, from positive to negative An arrangement of electrical devices connected so that

the total voltage must flow through all devices An electrical circuit that prevents current flow

31. What is the smallest physical

unit to which an element or compound can be reduced? Water Matter Molecule Atom

32.

33. Eo29} Figure 18-1.

34. Refer to

the figure above. What is the total voltage (Et) available in this parallel circuit? 0 volts 10 volts 40 volts 160

volts

35.

36. Eo29} Figure 19-1.

37. Refer to the figure above. What is the total voltage (Et) of two, 24-volt batteries in

parallel? 24 Volts 12 Volts oVoIts 48 Volts

38. What would you call the movement of free electrons past a reference

point? Current Bound Electrons Electron Charge Un-bound Electrons

39. Which device transfers electrical energy from a primary

coil to a secondary coil induction? Motor-starter Diode Transformer Relay

40. Which term best describes the product ofthe

force known as torque? Pressure Tension Rotation Power

41.

42. Eo29} Figure 23-1.

43. Refer to the figure above. What

is the value ofl (current) in a series circuit if E = 50 volts and R = 25 ohms? 3 amps .5 amps 2 amps 1 amp

44. What is the

missing voltage drop of a 50-volt power source that has known voltage drops of 10 volts, 15 volts, and 20 volts? 6 volts 12 volts 8

volts 5 volts

45.

46. Eo29} Figure 25-1.

47. Refer to the figure above. In a series circuit, what is the value of Rt if R1 = 9

Ohms, R2 = 9 ohms, and R3 9 = ohms? 9 ohms 27 ohms 0 ohms 3 ohms

48. When using a multimeter remove all power from the

equipment, with the exception of ACIDC circuits being tested, before connecting or disconnecting what component? Power cord Test

lead Battery Rotary switch

49. What term best describes the space surrounding a magnet, in which the magnet force

acts? Magnetic Shielding Magnetic Flux Magnetic Field Lines of Force

50. Which statement best defines a parallel electrical

circuit? A circuit having more than one current path connected to a common voltage source A circuit having more than one voltage

source Two series circuits on top of each other A circuit having one current path connected to a common voltage

source

51.

52. Eo29} Figure 29-1.

53. Refer to the figure above. What is the total power (Pt) ofthis parallel circuit? 100

watts 50 watts 40 watts 20 watts

54.

55. Eo29} Figure 30-1.

56. Refer to the figure above. R1, R2, and R3 are three

resistors in parallel. What is the total current ofthis parallel circuit if given the values of Et = 48v, IR1 = 4a, IR2 = 8a, and IR3

12a? 12a 4a 24a 8a

57. What simple rule has been established for finding the direction of magnetic force around a

current-carrying conductor? Both Right and Left Hand Rule Right Hand Rule Current Flow Rule Left Hand

Rule

58.

59. Eo29} Figure 32-1.

60. Refer to the figure above. What is the power (P) ofthis circuit? 20 watts 100

watts 10 watts 5 watts

61. What type of switch has an onloff position with one pole and one contact? Single-pole, Double-throw

Switch Double-pole, Single-throw Switch Single-pole, Single-throw Switch Double-pole, Double-throw Switch

62. What is the simplest

protective device for an electric circuit? Motor-starter Ampere Breaker Fuse

63.

64. Eo29} Figure 35-1.

65. Refer to

the figure above. What is the total power (Pt) ofthis series-parallel circuit? 180 watts 150 watts 50 watts 100

watts

66. Which ofthe following statements best defines a series-parallel electrical circuit? A series-parallel circuit has the

same current (I) in all parts ofthe circuit A series-parallel circuit has at least three resistive components that are connected in both

parallel and series A series-parallel circuit has the same voltage (E) in all parts ofthe circuit A series-parallel circuit has at

least two resistive components that are connected in both parallel and series

67. What electrical device stores a

charge? Capacitor Circuit Electron Resistor

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