Quiz About Direct Current Circuit Basics And Analysis

17 Questions | Total Attempts: 927

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Integrated Circuit Quizzes & Trivia

Direct current is the one directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. A direct current circuit is an electrical circuit that consists of any combination of constant voltage sources, constant current sources, and resistors. This is a Quiz about Direct Current Circuit Basics and Analysis!


Questions and Answers
  • 1. 
    In a series-connected string of ornament bulbs, if one bulb gets shorted out, which of thefollowing will occur?
    • A. 

      All the other bulbs will go out.

    • B. 

      The current in the string will go up.

    • C. 

      The current in the string will go down.

    • D. 

      The current in the string will stay the same.

  • 2. 
    Imagine that four resistors are connected in series across a 6.0-V battery, and the ohmic values are R1 = 10 Ω, R2 = 20 Ω, R3 = 50 Ω, and R4 = 100 Ω. What is the voltage across the resistance R2?
    • A. 

      0.18 V

    • B. 

      33 mV

    • C. 

      5.6 mV

    • D. 

      0.67 V

  • 3. 
    Suppose three resistors are connected in parallel across a battery that delivers 15 V, and theohmic values are R1 = 470 Ω, R2 = 2.2 kΩ, and R3 = 3.3 kΩ. The voltageacross the resistance R2 is
    • A. 

      4.4 V.

    • B. 

      5.0 V.

    • C. 

      15 V.

    • D. 

      Not determinable from the data given.

  • 4. 
    Fill in the blank in the following sentence to make it true: “In a series or parallel dc circuit, thesum of the s in each component is equal to the total provided by the power supply.”
    • A. 

      Current

    • B. 

      Voltage

    • C. 

      Wattage

    • D. 

      Resistance

  • 5. 
    In a voltage divider network, the total resistance
    • A. 

      Should be large to minimize current drain.

    • B. 

      Should be as small as the power supply will allow.

    • C. 

      Is not important.

    • D. 

      Should be such that the current is kept to 100 mA.

  • 6. 
    The maximum voltage output from a voltage divider
    • A. 

      Is a fraction of the power supply voltage.

    • B. 

      Depends on the total resistance.

    • C. 

      Is equal to the supply voltage.

    • D. 

      Depends on the ratio of resistances.

  • 7. 
    Suppose you double the voltage in a simple dc circuit, and cut the resistance in half. Thecurrent will
    • A. 

      Become four times as great.

    • B. 

      Become twice as great.

    • C. 

      Stay the same as it was before.

    • D. 

      Become half as great.

  • 8. 
    You can expect to find a wiring diagram
    • A. 

      On a sticker on the back of a television receiver.

    • B. 

      In an advertisement for an electric oven.

    • C. 

      In the service/repair manual for a two-way radio.

    • D. 

      In the photograph of the front panel of a stereo hi-fi tuner.

  • 9. 
    Suppose six resistors are hooked up in series, and each of them has a value of 540 Ω.What is the resistance across the entire combination?
    • A. 

      90 Ω

    • B. 

      3.24 kΩ

    • C. 

      540 Ω

    • D. 

      None of the above

  • 10. 
    If four resistors are connected in series, each with a value of 4.0 kΩ, the total resistance is
    • A. 

      1 kΩ.

    • B. 

      4 kΩ.

    • C. 

      8 kΩ.

    • D. 

      16 kΩ.

  • 11. 
    Suppose you have three resistors in parallel, each with a value of 0.069 MΩ. Then the totalresistance is
    • A. 

      23 Ω.

    • B. 

      23 kΩ.

    • C. 

      204 Ω.

    • D. 

      0.2 MΩ.

  • 12. 
    Imagine three resistors in parallel, with values of 22 Ω, 27 Ω, and 33 Ω. If a 12-V battery isconnected across this combination, what is the current drawn from the battery?
    • A. 

      1.4 A

    • B. 

      15 mA

    • C. 

      150 mA

    • D. 

      1.5 A

  • 13. 
    Imagine three resistors, with values of 47 Ω, 68 Ω, and 82 Ω, connected in series with a 50-Vdc generator. The total power consumed by this network of resistors is
    • A. 

      250 mW.

    • B. 

      13 mW.

    • C. 

      13 W.

    • D. 

      Impossible to determine from the data given.

  • 14. 
    Suppose you have an unlimited supply of 1-W, 100-Ω resistors. You need to get a 100-Ω,10-W resistor. This can be done most cheaply by means of a series-parallel matrix of
    • A. 

      3 × 3 resistors.

    • B. 

      4 × 3 resistors.

    • C. 

      4 × 4 resistors.

    • D. 

      2 × 5 resistors.

  • 15. 
    Suppose you have an unlimited supply of 1-W, 1000-Ω resistors, and you need a 500-Ωresistance rated at 7 W or more. This can be done by assembling
    • A. 

      Four sets of two resistors in series, and connecting these four sets in parallel.

    • B. 

      Four sets of two resistors in parallel, and connecting these four sets in series.

    • C. 

      A 3 × 3 series-parallel matrix of resistors.

    • D. 

      A series-parallel matrix, but something different than those described above.

  • 16. 
    Suppose you have an unlimited supply of 1-W, 1000-Ω resistors, and you need to get a 3000-Ω, 5-W resistance. The best way is to
    • A. 

      Make a 2 × 2 series-parallel matrix.

    • B. 

      Connect three of the resistors in parallel.

    • C. 

      Make a 3 × 3 series-parallel matrix.

    • D. 

      Do something other than any of the above.

  • 17. 
    Good engineering practice usually requires that a series-parallel resistive network be assembled
    • A. 

      From resistors that are all different.

    • B. 

      From resistors that are all identical.

    • C. 

      From a series combination of resistors in parallel but not from a parallel combination of resistors in series.

    • D. 

      From a parallel combination of resistors in series, but not from a series combination of resistors in parallel.

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