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  • Question

  • 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

  • Correct Answer
  • 20 V 

    • Series Circuits problems

    Search Results

    • 1. 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
    • 2. 

      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
    • 3. 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
    • 4. 

      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
    • 5. 

      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
      • Discuss
    • 6. What are the minimum and maximum output voltages?


    • Options
    • A. 0 V, 4 V
    • B. 0 V, 8 V
    • C. 0 V, 12 V
    • D. 0 V, 16 V
      • Discuss
    • 7. 
      While putting three 1.5 V batteries into a flashlight, you put one in backwards. The flashlight will be ______________.

    • Options
    • A. brighter than normal
    • B. dimmer than normal
    • C. off
    • D. the same
      • Discuss
    • 8. What is the dc source voltage?


    • Options
    • A. 78 V
    • B. 39 V
    • C. 13 V
    • D. 0 V
      • Discuss
    • 9. With a total resistance of 3300 ohms and a 45 V source, if R3 is 1200 ohms, what will be its voltage drop?

    • Options
    • A. 16.36 V
    • B. 32.72 V
    • C. 10.90 V
    • D. 15.00 V
      • Discuss
    • 10. 

      Calculate the voltage at point C in the given circuit.


    • Options
    • A. +1.48 V
    • B. +0.94 V
    • C. +11.6 V
    • D. +3 V
      • Discuss

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