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Home ‣ Electrical Engineering ‣ Parallel Circuits See What Others Are Saying!
  • Question

  • If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is


  • Options
  • A. 50 mA
  • B. 70 mA
  • C. 120 mA
  • D. 40 mA

  • Correct Answer
  • 70 mA 

    • More questions

    • 1. The true power in a capacitor is zero.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Parallel resistors are connected between the same two points.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A smaller-value load resistor will cause the output voltage to change more than a larger-value one.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. 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
    • 5. A reflective load is a load as it appears to the source in the primary of a transformer.

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

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. 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
    • 9. 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
    • 10. 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

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