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  • Question

  • A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is


  • Options
  • A. 24 Ω
  • B. 2.4 Ω
  • C. 300 Ω
  • D. 3,000 Ω

  • Correct Answer
  • 3,000 Ω 

    • Series-Parallel Circuits problems

    Search Results

    • 1. A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?

    • Options
    • A. 1 MΩ
    • B. 24 kΩ
    • C. 18 kΩ
    • D. 12 kΩ
      • Discuss
    • 2. A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately

    • Options
    • A. 14 mA
    • B. 1.4 mA
    • C. 5 mA
    • D. 50 mA
      • Discuss
    • 3. A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are

    • Options
    • A. 2 V, 4 V
    • B. 2 V, 2 V
    • C. 2 V, 6 V
    • D. 4 V, 6 V
      • Discuss
    • 4. The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 kΩ resistor is

    • Options
    • A. 25%
    • B. 20%
    • C. 100%
    • D. 50%
      • Discuss
    • 5. The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is

    • Options
    • A. 15,000 Ω
    • B. 150,000 Ω
    • C. 1,500,000 Ω
    • D. 15,000,000 Ω
      • Discuss
    • 6. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is

    • Options
    • A. 20,000 Ω
    • B. 100,000 Ω
    • C. 200,000 Ω
    • D. 1,000,000 Ω
      • Discuss
    • 7. The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is

    • Options
    • A. 1,650 Ω
    • B. 1,078 Ω
    • C. 77.8 Ω
    • D. 778 Ω
      • Discuss
    • 8. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is

    • Options
    • A. 1,403 Ω
    • B. 4.7 kΩ
    • C. 2 kΩ
    • D. 3,403 Ω
      • Discuss
    • 9. When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source

    • Options
    • A. decreases
    • B. increases
    • C. remains the same
    • D. is cut off
      • Discuss
    • 10. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is

    • Options
    • A. 24 V
    • B. 12 V
    • C. 0 V
    • D. 6 V
      • Discuss

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