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Home Electrical Engineering Voltage, Current and Resistance Comments

  • Question
  • Which of the following is not a type of energy source?


  • Options
  • A. generator
  • B. rheostat
  • C. solar cell
  • D. battery

  • Correct Answer
  • rheostat 


  • Voltage, Current and Resistance problems


    Search Results


    • 1. The current in a given circuit is not to exceed 24 A. Which value of fuse is best?

    • Options
    • A. a fuse is not necessary
    • B. 10 A
    • C. 24 A
    • D. 20 A
    • Discuss
    • 2. Eight-tenths coulomb passes a point in 4 s. The current in amperes is

    • Options
    • A. 1.6 A
    • B. 16 A
    • C. 2 A
    • D. 0.2 A
    • Discuss
    • 3. The unit of electrical charge is the

    • Options
    • A. coulomb
    • B. joule
    • C. volt
    • D. watt
    • Discuss
    • 4. The colored bands for a 4,700 ohm resistor with a ten percent tolerance are

    • Options
    • A. yellow, violet, red, gold
    • B. yellow, violet, orange, gold
    • C. yellow, violet, red, silver
    • D. orange, violet, red, silver
    • Discuss
    • 5. When the current is 2.5 A, how many coulombs pass a point in 0.2 s?

    • Options
    • A. 12.5 C
    • B. 1.25 C
    • C. 0.5 C
    • D. 5 C
    • Discuss
    • 6. Current flows in a circuit when

    • Options
    • A. a switch is opened
    • B. a switch is closed
    • C. the switch is either open or closed
    • D. there is no voltage
    • Discuss
    • 7. A two-terminal variable resistor is known as a

    • Options
    • A. potentiometer
    • B. thermistor
    • C. rheostat
    • D. wiper
    • Discuss
    • 8. The conductance of an 8 ohm resistance is

    • Options
    • A. 12.5 mS
    • B. 8 mS
    • C. 12 S
    • D. 125 mS
    • Discuss
    • 9. A material that does not allow current under normal conditions is a(n)

    • Options
    • A. insulator
    • B. conductor
    • C. semiconductor
    • D. valence
    • Discuss
    • 10. An ammeter is an electrical instrument used to measure

    • Options
    • A. current
    • B. voltage
    • C. resistance
    • D. none of the above
    • Discuss


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