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Home Electrical Engineering Series Circuits See What Others Are Saying!
  • Question
  • A series circuit consists of three resistors with values of 120 Ω, 270 Ω, and 330 Ω. The total resistance is


  • Options
  • A. less than 120 Ω
  • B. the average of the values
  • C. 720 Ω
  • D. 120 Ω

  • Correct Answer
  • 720 Ω 


  • More questions

    • 1. In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. A reflective load is a load as it appears to the source in the primary of a transformer.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. A transformer changes ac to dc.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. Series aiding is a term sometimes used to describe voltage sources of the same polarity in series.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. The number 4,500,000 can be expressed as

    • Options
    • A. 4,500 × 106
    • B. 4.5 × 106
    • C. 4.5 × 10-3
    • D. either 4,500 × 104 or 4.5 × 106
    • Discuss
    • 6. Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is

    • Options
    • A. 15 mA
    • B. 5 mA
    • C. 2 mA
    • D. 0 A
    • Discuss
    • 7. The branch current method uses

    • Options
    • A. Kirchhoff's voltage and current laws
    • B. Thevenin's theorem and Ohm's law
    • C. Kirchhoff's current law and Ohm's law
    • D. the superposition theorem and Thevenin's theorem
    • Discuss
    • 8. Some circuits require more than one voltage or current source.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. An ohmmeter is an instrument for measuring

    • Options
    • A. current
    • B. voltage
    • C. resistance
    • D. wattage
    • Discuss
    • 10. In a three-phase system, the voltages are separated by

    • Options
    • A. 45°
    • B. 90°
    • C. 120°
    • D. 180°
    • Discuss


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