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  • Question

  • If the voltage between points A and B equals 9 V in the given circuit, then VR3 equals ______. 0.9 V

    If the voltage between points A and B equals 9 V in the given circuit, then VR3 equals ______.


  • Options
  • A. 0.9 V
  • B. 8.1 V
  • C. 9 V
  • D. More information is needed to find VR3.

  • Correct Answer
  • 8.1 V 

    • Series-Parallel Circuits problems

    Search Results

    • 1. 

      In the given circuit, the voltage dropped across R1 equals _____.


    • Options
    • A. 1 V
    • B. 9 V
    • C. 10 V
    • D. 19 V
      • Discuss
    • 2. ___ is often used to analyze multiple-source circuits.

    • Options
    • A. Thevenin's theorem
    • B. Superposition
    • C. Kirchhoff's law
    • D. Ohm's law
      • Discuss
    • 3. 

      In the given circuit, the voltage at point A equals ______.


    • Options
    • A. ?10 V
    • B. +1 V
    • C. +9 V
    • D. +10 V
      • Discuss
    • 4. If four 10 kΩ resistors are in series with a single 20 kΩ resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________.

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. drops to zero
      • Discuss
    • 5. When a load is connected to a voltage divider, the total resistance of the circuit will ________.

    • Options
    • A. increase
    • B. decrease
    • C. remain the same
    • D. double
      • Discuss
    • 6. A Thevenin equivalent circuit contains _____.

    • Options
    • A. a voltage source in series with a resistance
    • B. a current source in series with a resistance
    • C. resistors in a series-parallel configuration
    • D. many voltage sources
      • Discuss
    • 7. 

      If R3 opens in the given circuit, the total resistance (RT) between points A and B equals ____.


    • Options
    • A. 900 Ω
    • B. 100 Ω
    • C. 110 Ω
    • D. infinite resistance
      • Discuss
    • 8. XL = 2ΠfL

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Self-inductance is the property that causes an electromotive force to be produced in a conductor.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Lenz's law states that the current induced in a circuit due to a change in the magnetic field is so directed as to oppose the change in flux or to exert a mechanical force opposing the motion.

    • Options
    • A. True
    • B. False
      • Discuss

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