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  • Question

  • If R2 opens in the given circuit, what is the voltage at point B? +19.2 V +8.8 V +28 V ?19.2 V

    If R2 opens in the given circuit, what is the voltage at point B?


  • Options
  • A. +19.2 V
  • B. +8.8 V
  • C. +28 V
  • D. ?19.2 V

  • Correct Answer
  • +28 V 

    • Series Circuits problems

    Search Results

    • 1. An 8-ohm resistor is in series with a lamp. The circuit current is 1 A. With 20 V applied, what voltage is being allowed for the lamp?

    • Options
    • A. 4 V
    • B. 8 V
    • C. 12 V
    • D. 20 V
      • Discuss
    • 2. Power is defined as:

    • Options
    • A. the rate at which work is done
    • B. work
    • C. the conversion of energy
    • D. joules
      • Discuss
    • 3. If two resistors have the same voltage drop in a series circuit, it means:

    • Options
    • A. they are connected in parallel
    • B. they are of unequal value
    • C. the voltage has doubled
    • D. they are of equal value
      • Discuss
    • 4. If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?

    • Options
    • A. 11 V
    • B. 16 V
    • C. 21 V
    • D. 80 V
      • Discuss
    • 5. What determines the total resistance in a series circuit?

    • Options
    • A. the largest resistor
    • B. the sum of the resistors
    • C. the largest resistor minus the smaller
    • D. the smallest resistor
      • Discuss
    • 6. 

      What is the voltage at points B to D in the given circuit?


    • Options
    • A. +19.2 V
    • B. +8.8 V
    • C. +28 V
    • D. ?19.2 V
      • Discuss
    • 7. When a battery is connected to a series circuit, it delivers current based only upon:

    • Options
    • A. primary/secondary difference
    • B. total resistance
    • C. the polarity connections
    • D. average resistance
      • Discuss
    • 8. 

      Which is a true statement about the circuit in the given circuit?


    • Options
    • A. The batteries are series-aiding and the total source voltage equals 21 V.
    • B. The batteries are series-opposing and the total source voltage equals 3 V.
    • C. The batteries are series-aiding and the total source voltage equals 3 V.
    • D. The batteries are series-opposing and the total source voltage equals 21 V.
      • Discuss
    • 9. If the resistance total in a series circuit doubles, current will:

    • Options
    • A. be the same
    • B. be doubled
    • C. reduce source voltage
    • D. be halved
      • Discuss
    • 10. With 20 V applied, an 8-ohm resistor is in series with a lamp. When the lamp is removed, what voltage will be read across the lamp socket?

    • Options
    • A. 0 V
    • B. 8 V
    • C. 12 V
    • D. 20 V
      • Discuss

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