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Home ‣ Electrical Engineering ‣ Voltage, Current and Resistance See What Others Are Saying!
  • Question

  • The minimum resistance value for a blue, gray, red, silver resistor is


  • Options
  • A. 612 Ω
  • B. 6,120 Ω
  • C. 6,800 Ω
  • D. 6,460 Ω

  • Correct Answer
  • 6,120 Ω 

    Explanation
    Because of 10% tolerance(last color silver), this resistance may vary 10% of 6800.

    Minimum resistance value = 6800 - 680 = 6120

    Maximum resistance value = 6800 + 680 = 7480

    More questions

    • 1. In a certain Y-Y system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is

    • Options
    • A. 3 A
    • B. 6 A
    • C. 9 A
    • D. 27 A
      • Discuss
    • 2. In 0.025 W, there are

    • Options
    • A. 25 kW
    • B. 0.00025 mW
    • C. 2,500 µW
    • D. 25 mW
      • Discuss
    • 3. Compare the total copper cross sections in terms of current-carrying capacity for a single-phase and a three-phase 120 V system with effective load resistance of 15 Ω.

    • Options
    • A. single-phase 32 A; three-phase 16 A
    • B. single-phase 16 A; three-phase 8 A
    • C. single-phase 8 A; three-phase 4 A
    • D. single-phase 16 A; three-phase 0 A
      • Discuss
    • 4. The following resistors are in parallel across a voltage source: 220 Ω, 470 Ω, and 560 Ω. The resistor with the least current is

    • Options
    • A. 220 Ω
    • B. 470 Ω
    • C. 560 Ω
    • D. impossible to determine without knowing the voltage
      • Discuss
    • 5. A neutral atom with an atomic number of five has how many electrons?

    • Options
    • A. 1
    • B. 5
    • C. none
    • D. depends on the type of atom
      • Discuss
    • 6. A 470 Ω resistor and a coil with 125 Ω inductive reactance are in parallel. Both components are across a 15 V ac voltage source. Current through the inductor is

    • Options
    • A. 152 mA
    • B. 32 mA
    • C. 12 mA
    • D. 120 mA
      • Discuss
    • 7. The primary of a transformer is connected to a 6 V battery. The turns ratio is 1:3 and the secondary load, RL, is 100 Ω. The voltage across the load is

    • Options
    • A. 0 V
    • B. 6 V
    • C. 18 V
    • D. 2 V
      • Discuss
    • 8. A 2 µF, a 4 µF, and a 10 µF capacitor are connected in series. The total capacitance is less than

    • Options
    • A. 2 µF
    • B. 4 µF
    • C. 10 µF
    • D. 1.5 µF
      • Discuss
    • 9. What is the voltage source for a circuit carrying 2 A of current through a 36 Ω resistor?

    • Options
    • A. 1.8 V
    • B. 18 V
    • C. 7.2 V
    • D. 72 V
      • Discuss
    • 10. If there is 6 A of current through the filament of a lamp, how many coulombs of charge move through the filament in 1.75 s?

    • Options
    • A. 10.5 C
    • B. 105 C
    • C. 3.4 C
    • D. 34 C
      • Discuss

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