Round 1 Esdt-l2a Ncet 12-04

100 Questions | Total Attempts: 252

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Round 1 Esdt-l2a Ncet 12-04 - Quiz


Questions and Answers
  • 1. 
    A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is
    • A. 

      1.2 V

    • B. 

      0 V

    • C. 

      3 V

    • D. 

      6 V

  • 2. 
    When a fourth resistor is connected in series with three resistors, the total resistance
    • A. 

      Increases

    • B. 

      Increases by one-fourth

    • C. 

      Decreases

    • D. 

      Remains the same

  • 3. 
    When one of three series resistors is removed from a circuit and the circuit is reconnected, the current
    • A. 

      Increases

    • B. 

      Increases by one-third

    • C. 

      Decreases by one-third

    • D. 

      Decreases by the amount of current through the removed resistor

  • 4. 
    There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage
    • A. 

      Is 30 V

    • B. 

      Is 6 V

    • C. 

      Depends on the current flow

    • D. 

      Depends on the resistor values

  • 5. 
    The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates
    • A. 

      48 W

    • B. 

      12 W

    • C. 

      8 W

    • D. 

      3 W

  • 6. 
    All the voltage drops and the source voltage added together in a series circuit is equal to
    • A. 

      The total of the voltage drops

    • B. 

      The source voltage

    • C. 

      The total of the source voltage and the voltage drops

    • D. 

      Zero

  • 7. 
    If a 6 V and a 9 V source are connected series aiding, the total voltage is
    • A. 

      3v

    • B. 

      9v

    • C. 

      6v

    • D. 

      15v

  • 8. 
    Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is
    • A. 

      2A

    • B. 

      3A

    • C. 

      4A

    • D. 

      7A

  • 9. 
    If a 24 V and a 6 V battery are series opposing, the total voltage is
    • A. 

      18v

    • B. 

      30v

    • C. 

      24v

    • D. 

      20v

  • 10. 
    To measure the current out of the second resistor in a circuit consisting of four resistors in series, an ammeter can be placed
    • A. 

      At any point

    • B. 

      At the negative terminal of the source

    • C. 

      Between the third and fourth resistors

    • D. 

      Between the second and third resistors

  • 11. 
    What determines the total resistance in a series circuit?
    • A. 

      The sum of the resistors

    • B. 

      The largest resistor

    • C. 

      The largest resistor minus the smaller

    • D. 

      The smallest resistor

  • 12. 
    A series circuit schematic is recognized because all the components are connected:
    • A. 

      End to end in a "string"

    • B. 

      Horizontally across the page

    • C. 

      In a uniform vertical manner

    • D. 

      Diagonally across the page

  • 13. 
    If series resistors dissipate 16 mW, 107 mW, 146 mW, and 243 mW, what is the total power consumed by the circuit?
    • A. 

      269 mW

    • B. 

      128 mW

    • C. 

      512 mW

    • D. 

      1024 mW

  • 14. 
    If two resistors have the same voltage drop in a series circuit, it means:
    • A. 

      They are connected in parallel

    • B. 

      The voltage has doubled

    • C. 

      They are of unequal value

    • D. 

      They are of equal value

  • 15. 
    With a 900 V source, voltage is divided across 3 series resistors of 300 V, 280 V, and:
    • A. 

      300 V

    • B. 

      280 V

    • C. 

      320 V

    • D. 

      120 V

  • 16. 
    When a battery is connected to a series circuit, it delivers current based only upon:
    • A. 

      Total resistance

    • B. 

      Average resistance

    • C. 

      Primary/secondary difference

    • D. 

      The polarity connections

  • 17. 
    Resistance in a series circuit will:
    • A. 

      Oppose current

    • B. 

      Halve the power

    • C. 

      Double the current

    • D. 

      Control the voltage

  • 18. 
    How will an open resistor affect a series circuit?
    • A. 

      No current will flow in the circuit.

    • B. 

      Current will flow around the open resistor.

    • C. 

      Total resistance will decrease.

    • D. 

      The open resistor will drop 0 V.

  • 19. 
    Which equation determines individual resistor voltage drop?
    • A. 

      I x R

    • B. 

      V x I

    • C. 

      2I x R

    • D. 

      V x R

  • 20. 
    The voltage drop across a series resistor is proportional to what other value?
    • A. 

      Its own resistance

    • B. 

      The amount of time the circuit is on

    • C. 

      Wattage rating

    • D. 

      Total resistance

  • 21. 
    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?
    • A. 

      20v

    • B. 

      0v

    • C. 

      5v

    • D. 

      8v

  • 22. 
    In a series circuit, the voltage measured across a short will be:
    • A. 

      The normal voltage drop

    • B. 

      Zero volts

    • C. 

      Source voltage

    • D. 

      Infinite voltage

  • 23. 
    If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?
    • A. 

      11v

    • B. 

      21v

    • C. 

      0v

    • D. 

      -11v

  • 24. 
    Given a series circuit containing resistors of different values, which statement is not true?
    • A. 

      The current through each resistor is the same.

    • B. 

      The sum of the voltage drops across each resistive element will be equal.

    • C. 

      The total resistance is the sum of the value of the resistors.

    • D. 

      The voltage drop across each resistor is the same.

  • 25. 
    A series circuit current:
    • A. 

      Remains the same through each component

    • B. 

      Is the same as the individual resistances

    • C. 

      Varies through each component

    • D. 

      Is subtracted by each component

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